---
_id: '15099'
abstract:
- lang: eng
text: Speciation is a key evolutionary process that is not yet fully understood.
Combining population genomic and ecological data from multiple diverging pairs
of marine snails (Littorina) supports the search for speciation mechanisms. Placing
pairs on a one-dimensional speciation continuum, from undifferentiated populations
to species, obscured the complexity of speciation. Adding multiple axes helped
to describe either speciation routes or reproductive isolation in the snails.
Divergent ecological selection repeatedly generated barriers between ecotypes,
but appeared less important in completing speciation while genetic incompatibilities
played a key role. Chromosomal inversions contributed to genomic barriers, but
with variable impact. A multidimensional (hypercube) approach supported framing
of questions and identification of knowledge gaps and can be useful to understand
speciation in many other systems.
acknowledgement: KJ, MR, and RKB were supported by grants from the Swedish Research
Council (2021-0419, 2021-05243, and 2018-03695, respectively). RKB was also supported
by the Leverhulme Trust (RPG-2021-141), RF by FCT- Portuguese Science Foundation
(PTDC/BIA-EVL/1614/2021 and 2020.00275.CEECIND), and AMW by Norwegian Research Council
RCN (Project number 315287). We thank the members of the Integration of Speciation
Research network for stimulating discussions, the Littorina research community for
important contributions of data and analyses, and Cynthia Riginos for useful comments
on an earlier draft.
article_processing_charge: Yes (in subscription journal)
article_type: review
author:
- first_name: Kerstin
full_name: Johannesson, Kerstin
last_name: Johannesson
- first_name: Rui
full_name: Faria, Rui
last_name: Faria
- first_name: Alan
full_name: Le Moan, Alan
last_name: Le Moan
- first_name: Marina
full_name: Rafajlović, Marina
last_name: Rafajlović
- first_name: Anja M
full_name: Westram, Anja M
id: 3C147470-F248-11E8-B48F-1D18A9856A87
last_name: Westram
orcid: 0000-0003-1050-4969
- first_name: Roger K.
full_name: Butlin, Roger K.
last_name: Butlin
- first_name: Sean
full_name: Stankowski, Sean
id: 43161670-5719-11EA-8025-FABC3DDC885E
last_name: Stankowski
citation:
ama: Johannesson K, Faria R, Le Moan A, et al. Diverse pathways to speciation revealed
by marine snails. Trends in Genetics. 2024;40(4):337-351. doi:10.1016/j.tig.2024.01.002
apa: Johannesson, K., Faria, R., Le Moan, A., Rafajlović, M., Westram, A. M., Butlin,
R. K., & Stankowski, S. (2024). Diverse pathways to speciation revealed by
marine snails. Trends in Genetics. Elsevier. https://doi.org/10.1016/j.tig.2024.01.002
chicago: Johannesson, Kerstin, Rui Faria, Alan Le Moan, Marina Rafajlović, Anja
M Westram, Roger K. Butlin, and Sean Stankowski. “Diverse Pathways to Speciation
Revealed by Marine Snails.” Trends in Genetics. Elsevier, 2024. https://doi.org/10.1016/j.tig.2024.01.002.
ieee: K. Johannesson et al., “Diverse pathways to speciation revealed by
marine snails,” Trends in Genetics, vol. 40, no. 4. Elsevier, pp. 337–351,
2024.
ista: Johannesson K, Faria R, Le Moan A, Rafajlović M, Westram AM, Butlin RK, Stankowski
S. 2024. Diverse pathways to speciation revealed by marine snails. Trends in Genetics.
40(4), 337–351.
mla: Johannesson, Kerstin, et al. “Diverse Pathways to Speciation Revealed by Marine
Snails.” Trends in Genetics, vol. 40, no. 4, Elsevier, 2024, pp. 337–51,
doi:10.1016/j.tig.2024.01.002.
short: K. Johannesson, R. Faria, A. Le Moan, M. Rafajlović, A.M. Westram, R.K. Butlin,
S. Stankowski, Trends in Genetics 40 (2024) 337–351.
das_tickbox: '0'
date_created: 2024-03-10T23:00:54Z
date_published: 2024-04-01T00:00:00Z
date_updated: 2026-10-21T08:13:54Z
day: '01'
ddc:
- '570'
department:
- _id: NiBa
doi: 10.1016/j.tig.2024.01.002
external_id:
isi:
- '001224671300001'
pmid:
- '38395682'
file:
- access_level: open_access
checksum: 3077ea808c4cdc24d02dc58aced7eb35
content_type: application/pdf
creator: dernst
date_created: 2024-07-22T12:05:58Z
date_updated: 2024-07-22T12:05:58Z
file_id: '17313'
file_name: 2024_TrendsGenetics_Johannesson.pdf
file_size: 2288340
relation: main_file
success: 1
file_date_updated: 2024-07-22T12:05:58Z
fulldoi: https://doi.org/10.1016/j.tig.2024.01.002
has_accepted_license: '1'
intvolume: ' 40'
isi: 1
issue: '4'
language:
- iso: eng
license: https://creativecommons.org/licenses/by/4.0/
month: '04'
oa: 1
oa_version: Published Version
page: 337-351
pmid: 1
publication: Trends in Genetics
publication_identifier:
eissn:
- 1362-4555
issn:
- 0168-9525
publication_status: published
publisher: Elsevier
quality_controlled: '1'
researchdata_availability: no
scopus_import: '1'
status: public
supplementarymaterial: yes
title: Diverse pathways to speciation revealed by marine snails
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: '2024'
...
---
OA_type: closed access
_id: '886'
abstract:
- lang: eng
text: The factors that determine the tempo and mode of protein evolution continue
to be a central question in molecular evolution. Traditionally, studies of protein
evolution focused on the rates of amino acid substitutions. More recently, with
the availability of sequence data and advanced experimental techniques, the focus
of attention has shifted toward the study of evolutionary trajectories and the
overall layout of protein fitness landscapes. In this review we describe the effect
of epistasis on the topology of evolutionary pathways that are likely to be found
in fitness landscapes and develop a simple theory to connect the number of maladapted
genotypes to the topology of fitness landscapes with epistatic interactions. Finally,
we review recent studies that have probed the extent of epistatic interactions
and have begun to chart the fitness landscapes in protein sequence space.
acknowledgement: 'This work has been supported by a grant from the HHMI International
Early Career Scientist Program (#55007424), the Spanish Ministry of Economy and
Competitiveness (grant #BFU2012-31329) as part of the EMBO YIP program, two grants
from the Spanish Ministry of Economy and Competitiveness, Centro de Excelencia Severo
Ochoa 2013–2017 (#Sev-2012-0208) and BES-2013-064004 funded by the European Regional
Development Fund (ERDF), the European Union, and the European Research Council under
grant agreement no 335980_EinME.'
article_processing_charge: No
article_type: original
author:
- first_name: Dmitry
full_name: Kondrashov, Dmitry
last_name: Kondrashov
- first_name: Fyodor
full_name: Kondrashov, Fyodor
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
citation:
ama: Kondrashov D, Kondrashov F. Topological features of rugged fitness landscapes
in sequence space. Trends in Genetics. 2015;31(1):24-33. doi:10.1016/j.tig.2014.09.009
apa: Kondrashov, D., & Kondrashov, F. (2015). Topological features of rugged
fitness landscapes in sequence space. Trends in Genetics. Elsevier. https://doi.org/10.1016/j.tig.2014.09.009
chicago: Kondrashov, Dmitry, and Fyodor Kondrashov. “Topological Features of Rugged
Fitness Landscapes in Sequence Space.” Trends in Genetics. Elsevier, 2015.
https://doi.org/10.1016/j.tig.2014.09.009.
ieee: D. Kondrashov and F. Kondrashov, “Topological features of rugged fitness landscapes
in sequence space,” Trends in Genetics, vol. 31, no. 1. Elsevier, pp. 24–33,
2015.
ista: Kondrashov D, Kondrashov F. 2015. Topological features of rugged fitness landscapes
in sequence space. Trends in Genetics. 31(1), 24–33.
mla: Kondrashov, Dmitry, and Fyodor Kondrashov. “Topological Features of Rugged
Fitness Landscapes in Sequence Space.” Trends in Genetics, vol. 31, no.
1, Elsevier, 2015, pp. 24–33, doi:10.1016/j.tig.2014.09.009.
short: D. Kondrashov, F. Kondrashov, Trends in Genetics 31 (2015) 24–33.
date_created: 2018-12-11T11:49:01Z
date_published: 2015-01-01T00:00:00Z
date_updated: 2026-05-19T07:23:54Z
day: '01'
doi: 10.1016/j.tig.2014.09.009
extern: '1'
external_id:
pmid:
- '25438718'
fulldoi: https://doi.org/10.1016/j.tig.2014.09.009
intvolume: ' 31'
issue: '1'
keyword:
- Mimsatch repair
- Chromatin structure
- Replication fork
- Cancer therapy
language:
- iso: eng
month: '01'
oa_version: None
page: 24 - 33
pmid: 1
publication: Trends in Genetics
publication_identifier:
eissn:
- 1362-4555
issn:
- 0168-9525
publication_status: published
publisher: Elsevier
publist_id: '6764'
quality_controlled: '1'
scopus_import: '1'
status: public
title: Topological features of rugged fitness landscapes in sequence space
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 31
year: '2015'
...
---
OA_type: closed access
_id: '875'
abstract:
- lang: eng
text: The dominance of wild-type alleles and the concomitant recessivity of deleterious
mutant alleles might have evolved by natural selection or could be a by-product
of the molecular and physiological mechanisms of gene action. We compared the
properties of human haplosufficient genes, whose wild-type alleles are dominant
over loss-of-function alleles, with haploinsufficient (recessive wild-type) genes,
which produce an abnormal phenotype when heterozygous for a loss-of-function allele.
The fraction of haplosufficient genes is the highest among the genes that encode
enzymes, which is best compatible with the physiological theory. Haploinsufficient
genes, on average, have more paralogs than haplosufficient genes, supporting the
idea that gene dosage could be important for the initial fixation of duplications.
Thus, haplo(in)sufficiency of a gene and its propensity for duplication might
have a common evolutionary basis.
article_processing_charge: No
article_type: original
author:
- first_name: Fyodor
full_name: Kondrashov, Fyodor
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Eugene
full_name: Koonin, Eugene
last_name: Koonin
citation:
ama: Kondrashov F, Koonin E. A common framework for understanding the origin of
genetic dominance and evolutionary fates of gene duplications. Trends in Genetics.
2004;20(7):287-291. doi:10.1016/j.tig.2004.05.001
apa: Kondrashov, F., & Koonin, E. (2004). A common framework for understanding
the origin of genetic dominance and evolutionary fates of gene duplications. Trends
in Genetics. Elsevier. https://doi.org/10.1016/j.tig.2004.05.001
chicago: Kondrashov, Fyodor, and Eugene Koonin. “A Common Framework for Understanding
the Origin of Genetic Dominance and Evolutionary Fates of Gene Duplications.”
Trends in Genetics. Elsevier, 2004. https://doi.org/10.1016/j.tig.2004.05.001.
ieee: F. Kondrashov and E. Koonin, “A common framework for understanding the origin
of genetic dominance and evolutionary fates of gene duplications,” Trends in
Genetics, vol. 20, no. 7. Elsevier, pp. 287–291, 2004.
ista: Kondrashov F, Koonin E. 2004. A common framework for understanding the origin
of genetic dominance and evolutionary fates of gene duplications. Trends in Genetics.
20(7), 287–291.
mla: Kondrashov, Fyodor, and Eugene Koonin. “A Common Framework for Understanding
the Origin of Genetic Dominance and Evolutionary Fates of Gene Duplications.”
Trends in Genetics, vol. 20, no. 7, Elsevier, 2004, pp. 287–91, doi:10.1016/j.tig.2004.05.001.
short: F. Kondrashov, E. Koonin, Trends in Genetics 20 (2004) 287–291.
date_created: 2018-12-11T11:48:58Z
date_published: 2004-07-01T00:00:00Z
date_updated: 2026-09-30T13:38:03Z
day: '01'
doi: 10.1016/j.tig.2004.05.001
extern: '1'
external_id:
pmid:
- '15219392'
fulldoi: https://doi.org/10.1016/j.tig.2004.05.001
intvolume: ' 20'
issue: '7'
language:
- iso: eng
month: '07'
oa_version: None
page: 287 - 291
pmid: 1
publication: Trends in Genetics
publication_identifier:
eissn:
- 1362-4555
issn:
- 0168-9525
publication_status: published
publisher: Elsevier
publist_id: '6775'
status: public
title: A common framework for understanding the origin of genetic dominance and evolutionary
fates of gene duplications
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 20
year: '2004'
...
---
OA_type: closed access
_id: '876'
abstract:
- lang: eng
text: Alternative splicing is thought to be a major source of functional diversity
in animal proteins. We analyzed the evolutionary conservation of proteins encoded
by alternatively spliced genes and predicted the ancestral state for 73 cases
of alternative splicing (25 insertions and 48 deletions). The amino acid sequences
of most of the inserts in proteins produced by alternative splicing are as conserved
as the surrounding sequences. Thus, alternative splicing often creates novel isoforms
by the insertion of new, functional protein sequences that probably originated
from noncoding sequences of introns.
acknowledgement: We thank Peer Bork, Mikhail Gelfand, Alexey Kondrashov, David Lipman
and Shamil Sunyaev for critical reading of the manuscript and useful suggestions
and the Koonin group members for helpful discussions.
article_processing_charge: No
article_type: original
author:
- first_name: Fyodor
full_name: Kondrashov, Fyodor
id: 44FDEF62-F248-11E8-B48F-1D18A9856A87
last_name: Kondrashov
orcid: 0000-0001-8243-4694
- first_name: Eugene
full_name: Koonin, Eugene
last_name: Koonin
citation:
ama: 'Kondrashov F, Koonin E. Evolution of alternative splicing: Deletions, insertions
and origin of functional parts of proteins from intron sequences. Trends in
Genetics. 2003;19(3):115-119. doi:10.1016/S0168-9525(02)00029-X'
apa: 'Kondrashov, F., & Koonin, E. (2003). Evolution of alternative splicing:
Deletions, insertions and origin of functional parts of proteins from intron sequences.
Trends in Genetics. Elsevier. https://doi.org/10.1016/S0168-9525(02)00029-X'
chicago: 'Kondrashov, Fyodor, and Eugene Koonin. “Evolution of Alternative Splicing:
Deletions, Insertions and Origin of Functional Parts of Proteins from Intron Sequences.”
Trends in Genetics. Elsevier, 2003. https://doi.org/10.1016/S0168-9525(02)00029-X.'
ieee: 'F. Kondrashov and E. Koonin, “Evolution of alternative splicing: Deletions,
insertions and origin of functional parts of proteins from intron sequences,”
Trends in Genetics, vol. 19, no. 3. Elsevier, pp. 115–119, 2003.'
ista: 'Kondrashov F, Koonin E. 2003. Evolution of alternative splicing: Deletions,
insertions and origin of functional parts of proteins from intron sequences. Trends
in Genetics. 19(3), 115–119.'
mla: 'Kondrashov, Fyodor, and Eugene Koonin. “Evolution of Alternative Splicing:
Deletions, Insertions and Origin of Functional Parts of Proteins from Intron Sequences.”
Trends in Genetics, vol. 19, no. 3, Elsevier, 2003, pp. 115–19, doi:10.1016/S0168-9525(02)00029-X.'
short: F. Kondrashov, E. Koonin, Trends in Genetics 19 (2003) 115–119.
date_created: 2018-12-11T11:48:58Z
date_published: 2003-03-01T00:00:00Z
date_updated: 2026-05-28T13:49:56Z
day: '01'
doi: 10.1016/S0168-9525(02)00029-X
extern: '1'
external_id:
pmid:
- '12615001'
fulldoi: https://doi.org/10.1016/S0168-9525(02)00029-X
intvolume: ' 19'
issue: '3'
language:
- iso: eng
month: '03'
oa_version: None
page: 115 - 119
pmid: 1
publication: Trends in Genetics
publication_identifier:
eissn:
- 1362-4555
issn:
- 0168-9525
publication_status: published
publisher: Elsevier
publist_id: '6776'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Evolution of alternative splicing: Deletions, insertions and origin of functional
parts of proteins from intron sequences'
type: journal_article
user_id: ba8df636-2132-11f1-aed0-ed93e2281fdd
volume: 19
year: '2003'
...