---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
PlanS_conform: '1'
_id: '20223'
abstract:
- lang: eng
text: The first influential hypothesis for sex chromosome evolution was proposed
in 1914 by H. J. Muller, who argued that once recombination was suppressed between
the X and Y chromosomes, Y-linked genes become “sheltered” from selection, leading
to accumulation of recessive loss-of-function (LOF) mutations and decay of Y-linked
genes. The hypothesis fell out of favor in the 1970s because early mathematical
models failed to support it and data on the dominance of lethal mutations were
viewed as incompatible with the hypothesis. We reevaluate the main arguments against
Muller's hypothesis and find that they do not conclusively exclude a role for
sheltering in sex chromosome evolution. By relaxing restrictive assumptions of
earlier models, we show that sheltering promotes fixation of LOF mutations with
sexually dimorphic fitness effects, resulting in decay of X-linked genes that
are exclusively expressed by males and Y-linked genes that are primarily, though
not necessarily exclusively, expressed by females. We further show that drift
and other processes contributing to Y degeneration (i.e. selective interference
and regulatory evolution) expand conditions of Y-linked gene loss by sheltering.
The actual contribution of sheltering to sex chromosome evolution hinges upon
the distribution of dominance and sex-specific fitness effects of LOF mutations,
which we discuss.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: We thank Filip Ruzicka, Colin Olito, Akane Uesugi, Melissa Toups,
Daniel Jeffries, the Associate Editor, and anonymous reviewers, for comments and
suggestions on earlier versions of the paper. We are particularly grateful to Deborah
Charlesworth and Brian Charlesworth for extensive comments on two different drafts
of the manuscript. We also thank Aneil Agrawal and Thomas Lenormand for email correspondence
about the data on dominance and ways to interpret it. Technical support was provided
by ISTA Scientific Computing Unit.
article_number: msaf177
article_processing_charge: Yes
article_type: original
author:
- first_name: Andrea
full_name: Mrnjavac, Andrea
id: 353FAC84-AE61-11E9-8BFC-00D3E5697425
last_name: Mrnjavac
- first_name: Beatriz
full_name: Vicoso, Beatriz
id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
last_name: Vicoso
orcid: 0000-0002-4579-8306
- first_name: Tim
full_name: Connallon, Tim
last_name: Connallon
citation:
ama: Mrnjavac A, Vicoso B, Connallon T. An extension of Muller’s sheltering hypothesis
for the evolution of sex chromosome gene content. Molecular Biology and Evolution.
2025;42(8). doi:10.1093/molbev/msaf177
apa: Mrnjavac, A., Vicoso, B., & Connallon, T. (2025). An extension of Muller’s
sheltering hypothesis for the evolution of sex chromosome gene content. Molecular
Biology and Evolution. Oxford University Press. https://doi.org/10.1093/molbev/msaf177
chicago: Mrnjavac, Andrea, Beatriz Vicoso, and Tim Connallon. “An Extension of Muller’s
Sheltering Hypothesis for the Evolution of Sex Chromosome Gene Content.” Molecular
Biology and Evolution. Oxford University Press, 2025. https://doi.org/10.1093/molbev/msaf177.
ieee: A. Mrnjavac, B. Vicoso, and T. Connallon, “An extension of Muller’s sheltering
hypothesis for the evolution of sex chromosome gene content,” Molecular Biology
and Evolution, vol. 42, no. 8. Oxford University Press, 2025.
ista: Mrnjavac A, Vicoso B, Connallon T. 2025. An extension of Muller’s sheltering
hypothesis for the evolution of sex chromosome gene content. Molecular Biology
and Evolution. 42(8), msaf177.
mla: Mrnjavac, Andrea, et al. “An Extension of Muller’s Sheltering Hypothesis for
the Evolution of Sex Chromosome Gene Content.” Molecular Biology and Evolution,
vol. 42, no. 8, msaf177, Oxford University Press, 2025, doi:10.1093/molbev/msaf177.
short: A. Mrnjavac, B. Vicoso, T. Connallon, Molecular Biology and Evolution 42
(2025).
date_created: 2025-08-24T22:01:31Z
date_published: 2025-08-01T00:00:00Z
date_updated: 2025-09-30T14:25:57Z
day: '01'
ddc:
- '570'
department:
- _id: BeVi
doi: 10.1093/molbev/msaf177
external_id:
isi:
- '001547617100001'
pmid:
- '40713898'
file:
- access_level: open_access
checksum: f40abffa56cb1e9ff65800f2a7d7b39a
content_type: application/pdf
creator: dernst
date_created: 2025-09-02T07:47:32Z
date_updated: 2025-09-02T07:47:32Z
file_id: '20274'
file_name: 2025_MolecularBioEvolution_Mrnjavac.pdf
file_size: 1239841
relation: main_file
success: 1
file_date_updated: 2025-09-02T07:47:32Z
has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '8'
language:
- iso: eng
month: '08'
oa: 1
oa_version: Published Version
pmid: 1
publication: Molecular Biology and Evolution
publication_identifier:
eissn:
- 1537-1719
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://git.ista.ac.at/bvicoso/xydegenerate
scopus_import: '1'
status: public
title: An extension of Muller's sheltering hypothesis for the evolution of sex chromosome
gene content
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 42
year: '2025'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '19735'
abstract:
- lang: eng
text: The males and females of the brine shrimp Artemia franciscana are highly dimorphic,
and this dimorphism is associated with substantial sex-biased gene expression
in heads and gonads. How these sex-specific patterns of expression are regulated
at the molecular level is unknown. A. franciscana also has differentiated ZW sex
chromosomes, with complete dosage compensation, but the molecular mechanism through
which compensation is achieved is unknown. Here, we conducted CUT&TAG assays targeting
7 post-translational histone modifications (H3K27me3, H3K9me2, H3K9me3, H3K36me3,
H3K27ac, H3K4me3, and H4K16ac) in heads and gonads of A. franciscana, allowing
us to divide the genome into 12 chromatin states. We further defined functional
chromatin signatures for all genes, which were correlated with transcript level
abundances. Differences in the occupancy of the profiled epigenetic marks between
sexes were associated with differential gene expression between males and females.
Finally, we found a significant enrichment of the permissive H4K16ac histone mark
in the Z-specific region in both tissues of females but not males, supporting
the role of this histone mark in mediating dosage compensation of the Z chromosome.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: We thank the Vicoso lab for their help in maintaining Artemia and
for their valuable feedback and suggestions. We thank Marwan Elkrewi for his useful
technical advice and discussions. We are also grateful to the Scientific Unit at
ISTA Austria for computational resources and assistance. This work was supported
by Austrian science fund (FWF) grants PAT8748323 and SFB F88-10 (as part of the
SFB Meiosis consortium https://sfbmeiosis.org) to BV and Swedish Research Council
(Vetenskapsrådet, grant number 2020-06424) to MSTA.
article_number: msaf085
article_processing_charge: Yes
article_type: original
author:
- first_name: Vincent K
full_name: Bett, Vincent K
id: 57854184-AAE0-11E9-8D04-98D6E5697425
last_name: Bett
- first_name: Minerva S
full_name: Trejo Arellano, Minerva S
id: 2b681148-eed5-11eb-b81b-ae229e8620f8
last_name: Trejo Arellano
orcid: 0000-0002-1982-3475
- first_name: Beatriz
full_name: Vicoso, Beatriz
id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
last_name: Vicoso
orcid: 0000-0002-4579-8306
citation:
ama: Bett VK, Trejo Arellano MS, Vicoso B. Chromatin landscape is associated with
sex-biased expression and Drosophila-like dosage compensation of the Z chromosome
in Artemia franciscana. Molecular Biology and Evolution. 2025;42(5). doi:10.1093/molbev/msaf085
apa: Bett, V. K., Trejo Arellano, M. S., & Vicoso, B. (2025). Chromatin landscape
is associated with sex-biased expression and Drosophila-like dosage compensation
of the Z chromosome in Artemia franciscana. Molecular Biology and Evolution.
Oxford University Press. https://doi.org/10.1093/molbev/msaf085
chicago: Bett, Vincent K, Minerva S Trejo Arellano, and Beatriz Vicoso. “Chromatin
Landscape Is Associated with Sex-Biased Expression and Drosophila-like Dosage
Compensation of the Z Chromosome in Artemia Franciscana.” Molecular Biology
and Evolution. Oxford University Press, 2025. https://doi.org/10.1093/molbev/msaf085.
ieee: V. K. Bett, M. S. Trejo Arellano, and B. Vicoso, “Chromatin landscape is associated
with sex-biased expression and Drosophila-like dosage compensation of the Z chromosome
in Artemia franciscana,” Molecular Biology and Evolution, vol. 42, no.
5. Oxford University Press, 2025.
ista: Bett VK, Trejo Arellano MS, Vicoso B. 2025. Chromatin landscape is associated
with sex-biased expression and Drosophila-like dosage compensation of the Z chromosome
in Artemia franciscana. Molecular Biology and Evolution. 42(5), msaf085.
mla: Bett, Vincent K., et al. “Chromatin Landscape Is Associated with Sex-Biased
Expression and Drosophila-like Dosage Compensation of the Z Chromosome in Artemia
Franciscana.” Molecular Biology and Evolution, vol. 42, no. 5, msaf085,
Oxford University Press, 2025, doi:10.1093/molbev/msaf085.
short: V.K. Bett, M.S. Trejo Arellano, B. Vicoso, Molecular Biology and Evolution
42 (2025).
corr_author: '1'
date_created: 2025-05-25T22:16:56Z
date_published: 2025-05-01T00:00:00Z
date_updated: 2026-06-28T22:30:39Z
day: '01'
ddc:
- '570'
department:
- _id: BeVi
- _id: DaZi
doi: 10.1093/molbev/msaf085
external_id:
isi:
- '001483460200001'
pmid:
- '40202086'
file:
- access_level: open_access
checksum: 6c14b03f94b4aadf8869be2c4366d077
content_type: application/pdf
creator: dernst
date_created: 2025-05-28T09:34:36Z
date_updated: 2025-05-28T09:34:36Z
file_id: '19756'
file_name: 2025_MBE_Bett.pdf
file_size: 1282772
relation: main_file
success: 1
file_date_updated: 2025-05-28T09:34:36Z
has_accepted_license: '1'
intvolume: ' 42'
isi: 1
issue: '5'
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 8ed82125-16d5-11f0-9cad-fbcae312235b
grant_number: PAT 8748323
name: Sex chromosomes in evolution and development
- _id: 34ae1506-11ca-11ed-8bc3-c14f4c474396
grant_number: F8810
name: The highjacking of meiosis for asexual reproduction
publication: Molecular Biology and Evolution
publication_identifier:
eissn:
- 1537-1719
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
link:
- relation: software
url: https://github.com/vkb25/Chromatin-landscape-in-Artemia-franciscana.git
record:
- id: '20449'
relation: dissertation_contains
status: public
- id: '20444'
relation: dissertation_contains
status: deleted
scopus_import: '1'
status: public
title: Chromatin landscape is associated with sex-biased expression and Drosophila-like
dosage compensation of the Z chromosome in Artemia franciscana
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 42
year: '2025'
...
---
_id: '14613'
abstract:
- lang: eng
text: 'Many insects carry an ancient X chromosome - the Drosophila Muller element
F - that likely predates their origin. Interestingly, the X has undergone turnover
in multiple fly species (Diptera) after being conserved for more than 450 MY.
The long evolutionary distance between Diptera and other sequenced insect clades
makes it difficult to infer what could have contributed to this sudden increase
in rate of turnover. Here, we produce the first genome and transcriptome of a
long overlooked sister-order to Diptera: Mecoptera. We compare the scorpionfly
Panorpa cognata X-chromosome gene content, expression, and structure, to that
of several dipteran species as well as more distantly-related insect orders (Orthoptera
and Blattodea). We find high conservation of gene content between the mecopteran
X and the dipteran Muller F element, as well as several shared biological features,
such as the presence of dosage compensation and a low amount of genetic diversity,
consistent with a low recombination rate. However, the two homologous X chromosomes
differ strikingly in their size and number of genes they carry. Our results therefore
support a common ancestry of the mecopteran and ancestral dipteran X chromosomes,
and suggest that Muller element F shrank in size and gene content after the split
of Diptera and Mecoptera, which may have contributed to its turnover in dipteran
insects.'
acknowledged_ssus:
- _id: ScienComp
acknowledgement: "We thank the Vicoso lab for their assistance with specimen collection,
and Tim Connallon for valuable comments and suggestions on earlier versions of the
manuscript. Computational resources and support were provided by the Scientific
Computing unit at the ISTA. This research was supported by grants from the Austrian
Science Foundation to C.L.\r\n(FWF ESP 39), and to B.V. (FWF SFB F88-10)."
article_number: msad245
article_processing_charge: Yes
article_type: original
author:
- first_name: Clementine
full_name: Lasne, Clementine
id: 02225f57-50d2-11eb-9ed8-8c92b9a34237
last_name: Lasne
orcid: 0000-0002-1197-8616
- first_name: Marwan N
full_name: Elkrewi, Marwan N
id: 0B46FACA-A8E1-11E9-9BD3-79D1E5697425
last_name: Elkrewi
orcid: 0000-0002-5328-7231
- first_name: Melissa A
full_name: Toups, Melissa A
id: 4E099E4E-F248-11E8-B48F-1D18A9856A87
last_name: Toups
orcid: 0000-0002-9752-7380
- first_name: Lorena Alexandra
full_name: Layana Franco, Lorena Alexandra
id: 02814589-eb8f-11eb-b029-a70074f3f18f
last_name: Layana Franco
orcid: 0000-0002-1253-6297
- first_name: Ariana
full_name: Macon, Ariana
id: 2A0848E2-F248-11E8-B48F-1D18A9856A87
last_name: Macon
- first_name: Beatriz
full_name: Vicoso, Beatriz
id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
last_name: Vicoso
orcid: 0000-0002-4579-8306
citation:
ama: Lasne C, Elkrewi MN, Toups MA, Layana Franco LA, Macon A, Vicoso B. The scorpionfly
(Panorpa cognata) genome highlights conserved and derived features of the peculiar
dipteran X chromosome. Molecular Biology and Evolution. 2023;40(12). doi:10.1093/molbev/msad245
apa: Lasne, C., Elkrewi, M. N., Toups, M. A., Layana Franco, L. A., Macon, A., &
Vicoso, B. (2023). The scorpionfly (Panorpa cognata) genome highlights conserved
and derived features of the peculiar dipteran X chromosome. Molecular Biology
and Evolution. Oxford University Press. https://doi.org/10.1093/molbev/msad245
chicago: Lasne, Clementine, Marwan N Elkrewi, Melissa A Toups, Lorena Alexandra
Layana Franco, Ariana Macon, and Beatriz Vicoso. “The Scorpionfly (Panorpa Cognata)
Genome Highlights Conserved and Derived Features of the Peculiar Dipteran X Chromosome.”
Molecular Biology and Evolution. Oxford University Press, 2023. https://doi.org/10.1093/molbev/msad245.
ieee: C. Lasne, M. N. Elkrewi, M. A. Toups, L. A. Layana Franco, A. Macon, and B.
Vicoso, “The scorpionfly (Panorpa cognata) genome highlights conserved and derived
features of the peculiar dipteran X chromosome,” Molecular Biology and Evolution,
vol. 40, no. 12. Oxford University Press, 2023.
ista: Lasne C, Elkrewi MN, Toups MA, Layana Franco LA, Macon A, Vicoso B. 2023.
The scorpionfly (Panorpa cognata) genome highlights conserved and derived features
of the peculiar dipteran X chromosome. Molecular Biology and Evolution. 40(12),
msad245.
mla: Lasne, Clementine, et al. “The Scorpionfly (Panorpa Cognata) Genome Highlights
Conserved and Derived Features of the Peculiar Dipteran X Chromosome.” Molecular
Biology and Evolution, vol. 40, no. 12, msad245, Oxford University Press,
2023, doi:10.1093/molbev/msad245.
short: C. Lasne, M.N. Elkrewi, M.A. Toups, L.A. Layana Franco, A. Macon, B. Vicoso,
Molecular Biology and Evolution 40 (2023).
corr_author: '1'
date_created: 2023-11-27T16:14:37Z
date_published: 2023-12-01T00:00:00Z
date_updated: 2026-06-28T22:30:28Z
day: '01'
ddc:
- '570'
department:
- _id: BeVi
doi: 10.1093/molbev/msad245
external_id:
isi:
- '001122489000003'
pmid:
- '37988296'
file:
- access_level: open_access
checksum: 47c1c72fb499f26ea52d216b242208c8
content_type: application/pdf
creator: dernst
date_created: 2024-01-02T11:39:38Z
date_updated: 2024-01-02T11:39:38Z
file_id: '14727'
file_name: 2023_MolecularBioEvo_Lasne.pdf
file_size: 8623505
relation: main_file
success: 1
file_date_updated: 2024-01-02T11:39:38Z
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '12'
keyword:
- Genetics
- Molecular Biology
- Ecology
- Evolution
- Behavior and Systematics
language:
- iso: eng
month: '12'
oa: 1
oa_version: Published Version
pmid: 1
project:
- _id: 34ae1506-11ca-11ed-8bc3-c14f4c474396
grant_number: F8810
name: The highjacking of meiosis for asexual reproduction
- _id: ebb230e0-77a9-11ec-83b8-87a37e0241d3
grant_number: ESP39 49461
name: Mechanisms and Evolution of Reproductive Plasticity
publication: Molecular Biology and Evolution
publication_identifier:
eissn:
- 1537-1719
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
link:
- description: News on ISTA webpage
relation: press_release
url: https://ista.ac.at/en/news/on-the-hunt/
record:
- id: '14614'
relation: research_data
status: public
- id: '19386'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: The scorpionfly (Panorpa cognata) genome highlights conserved and derived features
of the peculiar dipteran X chromosome
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 40
year: '2023'
...
---
_id: '10167'
abstract:
- lang: eng
text: Schistosomes, the human parasites responsible for snail fever, are female-heterogametic.
Different parts of their ZW sex chromosomes have stopped recombining in distinct
lineages, creating “evolutionary strata” of various ages. Although the Z-chromosome
is well characterized at the genomic and molecular level, the W-chromosome has
remained largely unstudied from an evolutionary perspective, as only a few W-linked
genes have been detected outside of the model species Schistosoma mansoni. Here,
we characterize the gene content and evolution of the W-chromosomes of S. mansoni
and of the divergent species S. japonicum. We use a combined RNA/DNA k-mer based
pipeline to assemble around 100 candidate W-specific transcripts in each of the
species. About half of them map to known protein coding genes, the majority homologous
to S. mansoni Z-linked genes. We perform an extended analysis of the evolutionary
strata present in the two species (including characterizing a previously undetected
young stratum in S. japonicum) to infer patterns of sequence and expression evolution
of W-linked genes at different time points after recombination was lost. W-linked
genes show evidence of degeneration, including high rates of protein evolution
and reduced expression. Most are found in young lineage-specific strata, with
only a few high expression ancestral W-genes remaining, consistent with the progressive
erosion of nonrecombining regions. Among these, the splicing factor u2af2 stands
out as a promising candidate for primary sex determination, opening new avenues
for understanding the molecular basis of the reproductive biology of this group.
acknowledged_ssus:
- _id: ScienComp
acknowledgement: The authors thank IT support at IST Austria for providing an optimal
environment for bioinformatic analyses. This work was supported by an Austrian Science
Foundation FWF grant (Project P28842) to B.V.
article_processing_charge: No
article_type: original
author:
- first_name: Marwan N
full_name: Elkrewi, Marwan N
id: 0B46FACA-A8E1-11E9-9BD3-79D1E5697425
last_name: Elkrewi
orcid: 0000-0002-5328-7231
- first_name: Mikhail A.
full_name: Moldovan, Mikhail A.
id: c8bb7f32-3315-11ec-b58b-e5950e6c14a0
last_name: Moldovan
orcid: 0000-0002-8876-6494
- first_name: Marion A L
full_name: Picard, Marion A L
id: 2C921A7A-F248-11E8-B48F-1D18A9856A87
last_name: Picard
orcid: 0000-0002-8101-2518
- first_name: Beatriz
full_name: Vicoso, Beatriz
id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
last_name: Vicoso
orcid: 0000-0002-4579-8306
citation:
ama: Elkrewi MN, Moldovan MA, Picard MAL, Vicoso B. Schistosome W-linked genes inform
temporal dynamics of sex chromosome evolution and suggest candidate for sex determination.
Molecular Biology and Evolution. 2021;138(12):5345-5358. doi:10.1093/molbev/msab178
apa: Elkrewi, M. N., Moldovan, M. A., Picard, M. A. L., & Vicoso, B. (2021).
Schistosome W-linked genes inform temporal dynamics of sex chromosome evolution
and suggest candidate for sex determination. Molecular Biology and Evolution.
Oxford University Press . https://doi.org/10.1093/molbev/msab178
chicago: Elkrewi, Marwan N, Mikhail A. Moldovan, Marion A L Picard, and Beatriz
Vicoso. “Schistosome W-Linked Genes Inform Temporal Dynamics of Sex Chromosome
Evolution and Suggest Candidate for Sex Determination.” Molecular Biology and
Evolution. Oxford University Press , 2021. https://doi.org/10.1093/molbev/msab178.
ieee: M. N. Elkrewi, M. A. Moldovan, M. A. L. Picard, and B. Vicoso, “Schistosome
W-linked genes inform temporal dynamics of sex chromosome evolution and suggest
candidate for sex determination,” Molecular Biology and Evolution, vol.
138, no. 12. Oxford University Press , pp. 5345–58, 2021.
ista: Elkrewi MN, Moldovan MA, Picard MAL, Vicoso B. 2021. Schistosome W-linked
genes inform temporal dynamics of sex chromosome evolution and suggest candidate
for sex determination. Molecular Biology and Evolution. 138(12), 5345–58.
mla: Elkrewi, Marwan N., et al. “Schistosome W-Linked Genes Inform Temporal Dynamics
of Sex Chromosome Evolution and Suggest Candidate for Sex Determination.” Molecular
Biology and Evolution, vol. 138, no. 12, Oxford University Press , 2021, pp.
5345–58, doi:10.1093/molbev/msab178.
short: M.N. Elkrewi, M.A. Moldovan, M.A.L. Picard, B. Vicoso, Molecular Biology
and Evolution 138 (2021) 5345–58.
corr_author: '1'
date_created: 2021-10-21T07:49:12Z
date_published: 2021-06-19T00:00:00Z
date_updated: 2026-06-28T22:30:27Z
day: '19'
ddc:
- '610'
department:
- _id: BeVi
doi: 10.1093/molbev/msab178
external_id:
isi:
- '000741368600009'
pmid:
- '34146097'
file:
- access_level: open_access
checksum: 1b096702fb356d9c0eb88e1b3fcff5f8
content_type: application/pdf
creator: dernst
date_created: 2022-05-06T09:47:18Z
date_updated: 2022-05-06T09:47:18Z
file_id: '11352'
file_name: 2021_MolecularBiolEvolution_Elkrewi.pdf
file_size: 1008594
relation: main_file
success: 1
file_date_updated: 2022-05-06T09:47:18Z
has_accepted_license: '1'
intvolume: ' 138'
isi: 1
issue: '12'
keyword:
- sex chromosomes
- evolutionary strata
- W-linked gene
- sex determining gene
- schistosome parasites
language:
- iso: eng
month: '06'
oa: 1
oa_version: Published Version
page: 5345-58
pmid: 1
project:
- _id: 250ED89C-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P28842-B22
name: Sex chromosome evolution under male- and female- heterogamety
publication: Molecular Biology and Evolution
publication_identifier:
eissn:
- 1537-1719
issn:
- 0737-4038
publication_status: published
publisher: 'Oxford University Press '
quality_controlled: '1'
related_material:
record:
- id: '19386'
relation: dissertation_contains
status: public
scopus_import: '1'
status: public
title: Schistosome W-linked genes inform temporal dynamics of sex chromosome evolution
and suggest candidate for sex determination
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 138
year: '2021'
...
---
_id: '6089'
abstract:
- lang: eng
text: Pleiotropy is the well-established idea that a single mutation affects multiple
phenotypes. If a mutation has opposite effects on fitness when expressed in different
contexts, then genetic conflict arises. Pleiotropic conflict is expected to reduce
the efficacy of selection by limiting the fixation of beneficial mutations through
adaptation, and the removal of deleterious mutations through purifying selection.
Although this has been widely discussed, in particular in the context of a putative
“gender load,” it has yet to be systematically quantified. In this work, we empirically
estimate to which extent different pleiotropic regimes impede the efficacy of
selection in Drosophila melanogaster. We use whole-genome polymorphism data from
a single African population and divergence data from D. simulans to estimate the
fraction of adaptive fixations (α), the rate of adaptation (ωA), and the direction
of selection (DoS). After controlling for confounding covariates, we find that
the different pleiotropic regimes have a relatively small, but significant, effect
on selection efficacy. Specifically, our results suggest that pleiotropic sexual
antagonism may restrict the efficacy of selection, but that this conflict can
be resolved by limiting the expression of genes to the sex where they are beneficial.
Intermediate levels of pleiotropy across tissues and life stages can also lead
to maladaptation in D. melanogaster, due to inefficient purifying selection combined
with low frequency of mutations that confer a selective advantage. Thus, our study
highlights the need to consider the efficacy of selection in the context of antagonistic
pleiotropy, and of genetic conflict in general.
article_processing_charge: No
author:
- first_name: Christelle
full_name: Fraisse, Christelle
id: 32DF5794-F248-11E8-B48F-1D18A9856A87
last_name: Fraisse
orcid: 0000-0001-8441-5075
- first_name: Gemma
full_name: Puixeu Sala, Gemma
id: 33AB266C-F248-11E8-B48F-1D18A9856A87
last_name: Puixeu Sala
orcid: 0000-0001-8330-1754
- first_name: Beatriz
full_name: Vicoso, Beatriz
id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
last_name: Vicoso
orcid: 0000-0002-4579-8306
citation:
ama: Fraisse C, Puixeu Sala G, Vicoso B. Pleiotropy modulates the efficacy of selection
in drosophila melanogaster. Molecular biology and evolution. 2019;36(3):500-515.
doi:10.1093/molbev/msy246
apa: Fraisse, C., Puixeu Sala, G., & Vicoso, B. (2019). Pleiotropy modulates
the efficacy of selection in drosophila melanogaster. Molecular Biology and
Evolution. Oxford University Press. https://doi.org/10.1093/molbev/msy246
chicago: Fraisse, Christelle, Gemma Puixeu Sala, and Beatriz Vicoso. “Pleiotropy
Modulates the Efficacy of Selection in Drosophila Melanogaster.” Molecular
Biology and Evolution. Oxford University Press, 2019. https://doi.org/10.1093/molbev/msy246.
ieee: C. Fraisse, G. Puixeu Sala, and B. Vicoso, “Pleiotropy modulates the efficacy
of selection in drosophila melanogaster,” Molecular biology and evolution,
vol. 36, no. 3. Oxford University Press, pp. 500–515, 2019.
ista: Fraisse C, Puixeu Sala G, Vicoso B. 2019. Pleiotropy modulates the efficacy
of selection in drosophila melanogaster. Molecular biology and evolution. 36(3),
500–515.
mla: Fraisse, Christelle, et al. “Pleiotropy Modulates the Efficacy of Selection
in Drosophila Melanogaster.” Molecular Biology and Evolution, vol. 36,
no. 3, Oxford University Press, 2019, pp. 500–15, doi:10.1093/molbev/msy246.
short: C. Fraisse, G. Puixeu Sala, B. Vicoso, Molecular Biology and Evolution 36
(2019) 500–515.
date_created: 2019-03-10T22:59:19Z
date_published: 2019-03-01T00:00:00Z
date_updated: 2025-04-15T08:18:38Z
day: '01'
department:
- _id: BeVi
- _id: NiBa
doi: 10.1093/molbev/msy246
external_id:
isi:
- '000462585100006'
pmid:
- '30590559'
intvolume: ' 36'
isi: 1
issue: '3'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.ncbi.nlm.nih.gov/pubmed/30590559
month: '03'
oa: 1
oa_version: Submitted Version
page: 500-515
pmid: 1
project:
- _id: 250ED89C-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P28842-B22
name: Sex chromosome evolution under male- and female- heterogamety
publication: Molecular biology and evolution
publication_identifier:
eissn:
- 1537-1719
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
record:
- id: '5757'
relation: popular_science
status: public
scopus_import: '1'
status: public
title: Pleiotropy modulates the efficacy of selection in drosophila melanogaster
type: journal_article
user_id: 4359f0d1-fa6c-11eb-b949-802e58b17ae8
volume: 36
year: '2019'
...
---
_id: '19'
abstract:
- lang: eng
text: Bacteria regulate genes to survive antibiotic stress, but regulation can be
far from perfect. When regulation is not optimal, mutations that change gene expression
can contribute to antibiotic resistance. It is not systematically understood to
what extent natural gene regulation is or is not optimal for distinct antibiotics,
and how changes in expression of specific genes quantitatively affect antibiotic
resistance. Here we discover a simple quantitative relation between fitness, gene
expression, and antibiotic potency, which rationalizes our observation that a
multitude of genes and even innate antibiotic defense mechanisms have expression
that is critically nonoptimal under antibiotic treatment. First, we developed
a pooled-strain drug-diffusion assay and screened Escherichia coli overexpression
and knockout libraries, finding that resistance to a range of 31 antibiotics could
result from changing expression of a large and functionally diverse set of genes,
in a primarily but not exclusively drug-specific manner. Second, by synthetically
controlling the expression of single-drug and multidrug resistance genes, we observed
that their fitness-expression functions changed dramatically under antibiotic
treatment in accordance with a log-sensitivity relation. Thus, because many genes
are nonoptimally expressed under antibiotic treatment, many regulatory mutations
can contribute to resistance by altering expression and by activating latent defenses.
article_processing_charge: No
article_type: original
author:
- first_name: Adam
full_name: Palmer, Adam
last_name: Palmer
- first_name: Remy P
full_name: Chait, Remy P
id: 3464AE84-F248-11E8-B48F-1D18A9856A87
last_name: Chait
orcid: 0000-0003-0876-3187
- first_name: Roy
full_name: Kishony, Roy
last_name: Kishony
citation:
ama: Palmer A, Chait RP, Kishony R. Nonoptimal gene expression creates latent potential
for antibiotic resistance. Molecular Biology and Evolution. 2018;35(11):2669-2684.
doi:10.1093/molbev/msy163
apa: Palmer, A., Chait, R. P., & Kishony, R. (2018). Nonoptimal gene expression
creates latent potential for antibiotic resistance. Molecular Biology and Evolution.
Oxford University Press. https://doi.org/10.1093/molbev/msy163
chicago: Palmer, Adam, Remy P Chait, and Roy Kishony. “Nonoptimal Gene Expression
Creates Latent Potential for Antibiotic Resistance.” Molecular Biology and
Evolution. Oxford University Press, 2018. https://doi.org/10.1093/molbev/msy163.
ieee: A. Palmer, R. P. Chait, and R. Kishony, “Nonoptimal gene expression creates
latent potential for antibiotic resistance,” Molecular Biology and Evolution,
vol. 35, no. 11. Oxford University Press, pp. 2669–2684, 2018.
ista: Palmer A, Chait RP, Kishony R. 2018. Nonoptimal gene expression creates latent
potential for antibiotic resistance. Molecular Biology and Evolution. 35(11),
2669–2684.
mla: Palmer, Adam, et al. “Nonoptimal Gene Expression Creates Latent Potential for
Antibiotic Resistance.” Molecular Biology and Evolution, vol. 35, no. 11,
Oxford University Press, 2018, pp. 2669–84, doi:10.1093/molbev/msy163.
short: A. Palmer, R.P. Chait, R. Kishony, Molecular Biology and Evolution 35 (2018)
2669–2684.
date_created: 2018-12-11T11:44:11Z
date_published: 2018-08-28T00:00:00Z
date_updated: 2023-10-17T11:51:06Z
day: '28'
department:
- _id: CaGu
- _id: GaTk
doi: 10.1093/molbev/msy163
external_id:
isi:
- '000452567200006'
pmid:
- '30169679'
intvolume: ' 35'
isi: 1
issue: '11'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.ncbi.nlm.nih.gov/pubmed/30169679
month: '08'
oa: 1
oa_version: Submitted Version
page: 2669 - 2684
pmid: 1
publication: Molecular Biology and Evolution
publication_identifier:
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
publist_id: '8036'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nonoptimal gene expression creates latent potential for antibiotic resistance
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 35
year: '2018'
...
---
_id: '945'
abstract:
- lang: eng
text: While chromosome-wide dosage compensation of the X chromosome has been found
in many species, studies in ZW clades have indicated that compensation of the
Z is more localized and/or incomplete. In the ZW Lepidoptera, some species show
complete compensation of the Z chromosome, while others lack full equalization,
but what drives these inconsistencies is unclear. Here, we compare patterns of
male and female gene expression on the Z chromosome of two closely related butterfly
species, Papilio xuthus and Papilio machaon, and in multiple tissues of two moths
species, Plodia interpunctella and Bombyx mori, which were previously found to
differ in the extent to which they equalize Z-linked gene expression between the
sexes. We find that, while some species and tissues seem to have incomplete dosage
compensation, this is in fact due to the accumulation of male-biased genes and
the depletion of female-biased genes on the Z chromosome. Once this is accounted
for, the Z chromosome is fully compensated in all four species, through the up-regulation
of Z expression in females and in some cases additional down-regulation in males.
We further find that both sex-biased genes and Z-linked genes have increased rates
of expression divergence in this clade, and that this can lead to fast shifts
in patterns of gene expression even between closely related species. Taken together,
these results show that the uneven distribution of sex-biased genes on sex chromosomes
can confound conclusions about dosage compensation and that Z chromosome-wide
dosage compensation is not only possible but ubiquitous among Lepidoptera.
article_processing_charge: Yes (in subscription journal)
author:
- first_name: Ann K
full_name: Huylmans, Ann K
id: 4C0A3874-F248-11E8-B48F-1D18A9856A87
last_name: Huylmans
orcid: 0000-0001-8871-4961
- first_name: Ariana
full_name: Macon, Ariana
id: 2A0848E2-F248-11E8-B48F-1D18A9856A87
last_name: Macon
- first_name: Beatriz
full_name: Vicoso, Beatriz
id: 49E1C5C6-F248-11E8-B48F-1D18A9856A87
last_name: Vicoso
orcid: 0000-0002-4579-8306
citation:
ama: Huylmans AK, Macon A, Vicoso B. Global dosage compensation is ubiquitous in
Lepidoptera, but counteracted by the masculinization of the Z chromosome. Molecular
Biology and Evolution. 2017;34(10):2637-2649. doi:10.1093/molbev/msx190
apa: Huylmans, A. K., Macon, A., & Vicoso, B. (2017). Global dosage compensation
is ubiquitous in Lepidoptera, but counteracted by the masculinization of the Z
chromosome. Molecular Biology and Evolution. Oxford University Press. https://doi.org/10.1093/molbev/msx190
chicago: Huylmans, Ann K, Ariana Macon, and Beatriz Vicoso. “Global Dosage Compensation
Is Ubiquitous in Lepidoptera, but Counteracted by the Masculinization of the Z
Chromosome.” Molecular Biology and Evolution. Oxford University Press,
2017. https://doi.org/10.1093/molbev/msx190.
ieee: A. K. Huylmans, A. Macon, and B. Vicoso, “Global dosage compensation is ubiquitous
in Lepidoptera, but counteracted by the masculinization of the Z chromosome,”
Molecular Biology and Evolution, vol. 34, no. 10. Oxford University Press,
pp. 2637–2649, 2017.
ista: Huylmans AK, Macon A, Vicoso B. 2017. Global dosage compensation is ubiquitous
in Lepidoptera, but counteracted by the masculinization of the Z chromosome. Molecular
Biology and Evolution. 34(10), 2637–2649.
mla: Huylmans, Ann K., et al. “Global Dosage Compensation Is Ubiquitous in Lepidoptera,
but Counteracted by the Masculinization of the Z Chromosome.” Molecular Biology
and Evolution, vol. 34, no. 10, Oxford University Press, 2017, pp. 2637–49,
doi:10.1093/molbev/msx190.
short: A.K. Huylmans, A. Macon, B. Vicoso, Molecular Biology and Evolution 34 (2017)
2637–2649.
date_created: 2018-12-11T11:49:20Z
date_published: 2017-07-06T00:00:00Z
date_updated: 2026-04-16T09:58:19Z
day: '06'
ddc:
- '570'
- '576'
department:
- _id: BeVi
doi: 10.1093/molbev/msx190
external_id:
isi:
- '000411814800016'
file:
- access_level: open_access
checksum: 009fd68043211d645ceb9d1de28274f2
content_type: application/pdf
creator: system
date_created: 2018-12-12T10:10:23Z
date_updated: 2020-07-14T12:48:15Z
file_id: '4810'
file_name: IST-2017-848-v1+1_2017_Vicoso_GlobalDosage.pdf
file_size: 462863
relation: main_file
file_date_updated: 2020-07-14T12:48:15Z
has_accepted_license: '1'
intvolume: ' 34'
isi: 1
issue: '10'
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: 2637 - 2649
project:
- _id: 250ED89C-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: P28842-B22
name: Sex chromosome evolution under male- and female- heterogamety
publication: Molecular Biology and Evolution
publication_identifier:
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
publist_id: '6472'
pubrep_id: '848'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Global dosage compensation is ubiquitous in Lepidoptera, but counteracted by
the masculinization of the Z chromosome
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 34
year: '2017'
...
---
DOAJ_listed: '1'
OA_place: publisher
OA_type: gold
_id: '5749'
abstract:
- lang: eng
text: Parasitism creates selection for resistance mechanisms in host populations
and is hypothesized to promote increased host evolvability. However, the influence
of these traits on host evolution when parasites are no longer present is unclear.
We used experimental evolution and whole-genome sequencing of Escherichia coli
to determine the effects of past and present exposure to parasitic viruses (phages)
on the spread of mutator alleles, resistance, and bacterial competitive fitness.
We found that mutator alleles spread rapidly during adaptation to any of four
different phage species, and this pattern was even more pronounced with multiple
phages present simultaneously. However, hypermutability did not detectably accelerate
adaptation in the absence of phages and recovery of fitness costs associated with
resistance. Several lineages evolved phage resistance through elevated mucoidy,
and during subsequent evolution in phage-free conditions they rapidly reverted
to nonmucoid, phage-susceptible phenotypes. Genome sequencing revealed that this
phenotypic reversion was achieved by additional genetic changes rather than by
genotypic reversion of the initial resistance mutations. Insertion sequence (IS)
elements played a key role in both the acquisition of resistance and adaptation
in the absence of parasites; unlike single nucleotide polymorphisms, IS insertions
were not more frequent in mutator lineages. Our results provide a genetic explanation
for rapid reversion of mucoidy, a phenotype observed in other bacterial species
including human pathogens. Moreover, this demonstrates that the types of genetic
change underlying adaptation to fitness costs, and consequently the impact of
evolvability mechanisms such as increased point-mutation rates, depend critically
on the mechanism of resistance.
acknowledgement: The authors thank three anonymous reviewers and the editor for helpful
comments on the manuscript, as well as Dominique Schneider for feedback on an earlier
draft, Jenna Gallie for lytic λ and Julien Capelle for T5 and T6. This work was
supported by the Swiss National Science Foundation (PZ00P3_148255 to A.H.) and an
EU Marie Curie PEOPLE Postdoctoral Fellowship for Career Development (FP7-PEOPLE-2012-IEF-331824
to S.W.).
article_processing_charge: No
article_type: original
author:
- first_name: Sébastien
full_name: Wielgoss, Sébastien
last_name: Wielgoss
- first_name: Tobias
full_name: Bergmiller, Tobias
id: 2C471CFA-F248-11E8-B48F-1D18A9856A87
last_name: Bergmiller
orcid: 0000-0001-5396-4346
- first_name: Anna M.
full_name: Bischofberger, Anna M.
last_name: Bischofberger
- first_name: Alex R.
full_name: Hall, Alex R.
last_name: Hall
citation:
ama: Wielgoss S, Bergmiller T, Bischofberger AM, Hall AR. Adaptation to parasites
and costs of parasite resistance in mutator and nonmutator bacteria. Molecular
Biology and Evolution. 2016;33(3):770-782. doi:10.1093/molbev/msv270
apa: Wielgoss, S., Bergmiller, T., Bischofberger, A. M., & Hall, A. R. (2016).
Adaptation to parasites and costs of parasite resistance in mutator and nonmutator
bacteria. Molecular Biology and Evolution. Oxford University Press. https://doi.org/10.1093/molbev/msv270
chicago: Wielgoss, Sébastien, Tobias Bergmiller, Anna M. Bischofberger, and Alex
R. Hall. “Adaptation to Parasites and Costs of Parasite Resistance in Mutator
and Nonmutator Bacteria.” Molecular Biology and Evolution. Oxford University
Press, 2016. https://doi.org/10.1093/molbev/msv270.
ieee: S. Wielgoss, T. Bergmiller, A. M. Bischofberger, and A. R. Hall, “Adaptation
to parasites and costs of parasite resistance in mutator and nonmutator bacteria,”
Molecular Biology and Evolution, vol. 33, no. 3. Oxford University Press,
pp. 770–782, 2016.
ista: Wielgoss S, Bergmiller T, Bischofberger AM, Hall AR. 2016. Adaptation to parasites
and costs of parasite resistance in mutator and nonmutator bacteria. Molecular
Biology and Evolution. 33(3), 770–782.
mla: Wielgoss, Sébastien, et al. “Adaptation to Parasites and Costs of Parasite
Resistance in Mutator and Nonmutator Bacteria.” Molecular Biology and Evolution,
vol. 33, no. 3, Oxford University Press, 2016, pp. 770–82, doi:10.1093/molbev/msv270.
short: S. Wielgoss, T. Bergmiller, A.M. Bischofberger, A.R. Hall, Molecular Biology
and Evolution 33 (2016) 770–782.
date_created: 2018-12-18T13:18:10Z
date_published: 2016-03-01T00:00:00Z
date_updated: 2026-04-29T05:57:02Z
day: '01'
ddc:
- '576'
department:
- _id: CaGu
doi: 10.1093/molbev/msv270
external_id:
isi:
- '000371219500015'
pmid:
- '26609077'
file:
- access_level: open_access
checksum: 47d9010690b6c5c17f2ac830cc63ac5c
content_type: application/pdf
creator: dernst
date_created: 2018-12-18T13:21:45Z
date_updated: 2020-07-14T12:47:10Z
file_id: '5750'
file_name: 2016_MolBiolEvol_Wielgoss.pdf
file_size: 634037
relation: main_file
file_date_updated: 2020-07-14T12:47:10Z
has_accepted_license: '1'
intvolume: ' 33'
isi: 1
issue: '3'
language:
- iso: eng
month: '03'
oa: 1
oa_version: Published Version
page: 770-782
pmid: 1
publication: Molecular Biology and Evolution
publication_identifier:
eissn:
- 1537-1719
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
pubrep_id: '587'
quality_controlled: '1'
related_material:
record:
- id: '9719'
relation: research_data
status: public
scopus_import: '1'
status: public
title: Adaptation to parasites and costs of parasite resistance in mutator and nonmutator
bacteria
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/4.0/legalcode
name: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0)
short: CC BY-NC (4.0)
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 33
year: '2016'
...
---
OA_place: publisher
OA_type: free access
_id: '1902'
abstract:
- lang: eng
text: In the 1960s-1980s, determination of bacterial growth rates was an important
tool in microbial genetics, biochemistry, molecular biology, and microbial physiology.
The exciting technical developments of the 1990s and the 2000s eclipsed that tool;
as a result, many investigators today lack experience with growth rate measurements.
Recently, investigators in a number of areas have started to use measurements
of bacterial growth rates for a variety of purposes. Those measurements have been
greatly facilitated by the availability of microwell plate readers that permit
the simultaneous measurements on up to 384 different cultures. Only the exponential
(logarithmic) portions of the resulting growth curves are useful for determining
growth rates, and manual determination of that portion and calculation of growth
rates can be tedious for high-throughput purposes. Here, we introduce the program
GrowthRates that uses plate reader output files to automatically determine the
exponential portion of the curve and to automatically calculate the growth rate,
the maximum culture density, and the duration of the growth lag phase. GrowthRates
is freely available for Macintosh, Windows, and Linux.We discuss the effects of
culture volume, the classical bacterial growth curve, and the differences between
determinations in rich media and minimal (mineral salts) media. This protocol
covers calibration of the plate reader, growth of culture inocula for both rich
and minimal media, and experimental setup. As a guide to reliability, we report
typical day-to-day variation in growth rates and variation within experiments
with respect to position of wells within the plates.
article_processing_charge: No
article_type: original
author:
- first_name: Barry
full_name: Hall, Barry
last_name: Hall
- first_name: Hande
full_name: Acar, Hande
id: 2DDF136A-F248-11E8-B48F-1D18A9856A87
last_name: Acar
orcid: 0000-0003-1986-9753
- first_name: Anna
full_name: Nandipati, Anna
last_name: Nandipati
- first_name: Miriam
full_name: Barlow, Miriam
last_name: Barlow
citation:
ama: Hall B, Acar H, Nandipati A, Barlow M. Growth rates made easy. Molecular
Biology and Evolution. 2014;31(1):232-238. doi:10.1093/molbev/mst187
apa: Hall, B., Acar, H., Nandipati, A., & Barlow, M. (2014). Growth rates made
easy. Molecular Biology and Evolution. Oxford University Press. https://doi.org/10.1093/molbev/mst187
chicago: Hall, Barry, Hande Acar, Anna Nandipati, and Miriam Barlow. “Growth Rates
Made Easy.” Molecular Biology and Evolution. Oxford University Press, 2014.
https://doi.org/10.1093/molbev/mst187.
ieee: B. Hall, H. Acar, A. Nandipati, and M. Barlow, “Growth rates made easy,” Molecular
Biology and Evolution, vol. 31, no. 1. Oxford University Press, pp. 232–238,
2014.
ista: Hall B, Acar H, Nandipati A, Barlow M. 2014. Growth rates made easy. Molecular
Biology and Evolution. 31(1), 232–238.
mla: Hall, Barry, et al. “Growth Rates Made Easy.” Molecular Biology and Evolution,
vol. 31, no. 1, Oxford University Press, 2014, pp. 232–38, doi:10.1093/molbev/mst187.
short: B. Hall, H. Acar, A. Nandipati, M. Barlow, Molecular Biology and Evolution
31 (2014) 232–238.
date_created: 2018-12-11T11:54:37Z
date_published: 2014-01-01T00:00:00Z
date_updated: 2026-06-18T18:03:30Z
day: '01'
ddc:
- '570'
department:
- _id: JoBo
doi: 10.1093/molbev/mst187
external_id:
isi:
- '000329253200022'
pmid:
- '24170494'
intvolume: ' 31'
isi: 1
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/molbev/mst187
month: '01'
oa: 1
oa_version: Published Version
page: 232 - 238
pmid: 1
publication: Molecular Biology and Evolution
publication_identifier:
eissn:
- 1537-1719
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
publist_id: '5193'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Growth rates made easy
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 31
year: '2014'
...
---
_id: '4349'
abstract:
- lang: eng
text: 'Bayesian inference is becoming a common statistical approach to phylogenetic
estimation because, among other reasons, it allows for rapid analysis of large
data sets with complex evolutionary models. Conveniently, Bayesian phylogenetic
methods use currently available stochastic models of sequence evolution. However,
as with other model-based approaches, the results of Bayesian inference are conditional
on the assumed model of evolution: inadequate models (models that poorly fit the
data) may result in erroneous inferences. In this article, I present a Bayesian
phylogenetic method that evaluates the adequacy of evolutionary models using posterior
predictive distributions. By evaluating a model''s posterior predictive performance,
an adequate model can be selected for a Bayesian phylogenetic study. Although
I present a single test statistic that assesses the overall (global) performance
of a phylogenetic model, a variety of test statistics can be tailored to evaluate
specific features (local performance) of evolutionary models to identify sources
failure. The method presented here, unlike the likelihood-ratio test and parametric
bootstrap, accounts for uncertainty in the phylogeny and model parameters.'
acknowledgement: "This work was supported by grants from the NSF to John Huelsenbeck
(MCB-0075404 and DEB0075406), to whom I am grateful for his support throughout this
project. Also, I would like to express my deep thanks to Andrea Betancourt, John
Huelsenbeck, Kelly Dyer, Rasmus Nielsen, and Frederick Ronquist for taking the time
to read early versions of the\r\nmanuscript. Each and every one of them provided
invaluable comments, that ultimately made the manuscript better. John Huelsenbeck,
Bret Larget, Rasmus Nielsen, Ken Karol, and Andrea Betancourt patiently listened
to me drone on about this project, and offered insightful comments that benefited
this work, and for this they have my deepest gratitude. And finally, I would like
to thank two anonymous reviewers who gave critical attention to the manuscript and
provided valuable comments."
article_processing_charge: No
article_type: original
author:
- first_name: Jonathan P
full_name: Bollback, Jonathan P
id: 2C6FA9CC-F248-11E8-B48F-1D18A9856A87
last_name: Bollback
orcid: 0000-0002-4624-4612
citation:
ama: Bollback JP. Bayesian model adequacy and choice in phylogenetics. Molecular
Biology and Evolution. 2002;19(7):1171-1180. doi:10.1093/oxfordjournals.molbev.a004175
apa: Bollback, J. P. (2002). Bayesian model adequacy and choice in phylogenetics.
Molecular Biology and Evolution. Oxford University Press. https://doi.org/10.1093/oxfordjournals.molbev.a004175
chicago: Bollback, Jonathan P. “Bayesian Model Adequacy and Choice in Phylogenetics.”
Molecular Biology and Evolution. Oxford University Press, 2002. https://doi.org/10.1093/oxfordjournals.molbev.a004175.
ieee: J. P. Bollback, “Bayesian model adequacy and choice in phylogenetics,” Molecular
Biology and Evolution, vol. 19, no. 7. Oxford University Press, pp. 1171–80,
2002.
ista: Bollback JP. 2002. Bayesian model adequacy and choice in phylogenetics. Molecular
Biology and Evolution. 19(7), 1171–80.
mla: Bollback, Jonathan P. “Bayesian Model Adequacy and Choice in Phylogenetics.”
Molecular Biology and Evolution, vol. 19, no. 7, Oxford University Press,
2002, pp. 1171–80, doi:10.1093/oxfordjournals.molbev.a004175.
short: J.P. Bollback, Molecular Biology and Evolution 19 (2002) 1171–80.
date_created: 2018-12-11T12:08:24Z
date_published: 2002-03-25T00:00:00Z
date_updated: 2023-06-06T09:18:18Z
day: '25'
doi: 10.1093/oxfordjournals.molbev.a004175
extern: '1'
external_id:
pmid:
- '12082136 '
intvolume: ' 19'
issue: '7'
language:
- iso: eng
month: '03'
oa_version: None
page: 1171 - 80
pmid: 1
publication: Molecular Biology and Evolution
publication_identifier:
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
publist_id: '1112'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Bayesian model adequacy and choice in phylogenetics
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 19
year: '2002'
...
---
_id: '3655'
abstract:
- lang: eng
text: "The structural basis and distribution of variation in the ribosomal RNA multigene
family ( rDNA) was studied in the X0 and neo-XY races of the Alpine grasshopper
Podisma pedestris. Restriction-enzyme sites in the gene region of the rDNA repeat
were identical in both races and homogeneous in the rDNA family. In contrast,
sites for Hind111 and PvuII in the intergenic spacer (IGS) region showed racial
divergence and variation within the rDNA family and within populations. A short
insertion in the 28s gene region was present in a minority of repeats in both
races. The distributions of four polymorphic IGS Hind111 fragments were surveyed
at 43 locations in and around the hybrid zone. Two of these fragments appear to
be distributed as clines, one of which is strongly associated with the neo-X chromosome.
The other two fragments show considerable variation in both races and show negative
association. It is proposed that the clinally distributed variants arise from
processes of amplification and divergence of IGS sequence variants and that such
\r\ndivergence may contribute to hybrid inviability. "
acknowledgement: 'We thank Dr. W. Kunz for providing the clones pLm6F4 and pLm4Bll
and Dr. D. Glover for the clone pDm238. We thank Brian Curtis for his photographic
assistance. '
article_processing_charge: No
article_type: original
author:
- first_name: John
full_name: Dallas, John
last_name: Dallas
- first_name: Nicholas H
full_name: Barton, Nicholas H
id: 4880FE40-F248-11E8-B48F-1D18A9856A87
last_name: Barton
orcid: 0000-0002-8548-5240
- first_name: Gabriel
full_name: Dover, Gabriel
last_name: Dover
citation:
ama: Dallas J, Barton NH, Dover G. Interracial rDNA variation in the grasshopper
Podisma Pedestris. Molecular Biology and Evolution. 1988;5(6):660-674.
doi:10.1093/oxfordjournals.molbev.a040528
apa: Dallas, J., Barton, N. H., & Dover, G. (1988). Interracial rDNA variation
in the grasshopper Podisma Pedestris. Molecular Biology and Evolution.
Oxford University Press. https://doi.org/10.1093/oxfordjournals.molbev.a040528
chicago: Dallas, John, Nicholas H Barton, and Gabriel Dover. “Interracial RDNA Variation
in the Grasshopper Podisma Pedestris.” Molecular Biology and Evolution.
Oxford University Press, 1988. https://doi.org/10.1093/oxfordjournals.molbev.a040528.
ieee: J. Dallas, N. H. Barton, and G. Dover, “Interracial rDNA variation in the
grasshopper Podisma Pedestris,” Molecular Biology and Evolution, vol. 5,
no. 6. Oxford University Press, pp. 660–674, 1988.
ista: Dallas J, Barton NH, Dover G. 1988. Interracial rDNA variation in the grasshopper
Podisma Pedestris. Molecular Biology and Evolution. 5(6), 660–674.
mla: Dallas, John, et al. “Interracial RDNA Variation in the Grasshopper Podisma
Pedestris.” Molecular Biology and Evolution, vol. 5, no. 6, Oxford University
Press, 1988, pp. 660–74, doi:10.1093/oxfordjournals.molbev.a040528.
short: J. Dallas, N.H. Barton, G. Dover, Molecular Biology and Evolution 5 (1988)
660–674.
date_created: 2018-12-11T12:04:28Z
date_published: 1988-07-01T00:00:00Z
date_updated: 2022-02-08T13:20:51Z
day: '01'
doi: 10.1093/oxfordjournals.molbev.a040528
extern: '1'
intvolume: ' 5'
issue: '6'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://academic.oup.com/mbe/article/5/6/660/1044340
month: '07'
oa: 1
oa_version: None
page: 660 - 674
publication: Molecular Biology and Evolution
publication_identifier:
eissn:
- 1537-1719
issn:
- 0737-4038
publication_status: published
publisher: Oxford University Press
publist_id: '2728'
quality_controlled: '1'
status: public
title: Interracial rDNA variation in the grasshopper Podisma Pedestris
type: journal_article
user_id: ea97e931-d5af-11eb-85d4-e6957dddbf17
volume: 5
year: '1988'
...