@article{3673,
  abstract     = {The effect of a cline as a barrier to gene flow at closely linked, weakly selected loci is investigated using a continuous diffusion model. It is shown that a linked cline induces a step in the frequency of a neutral allele, which is proportional to the gradient in neutral allele frequency and to the inverse of the recombination rate. A barrier to dispersal or a local region of low abundance has a similar effect (Nagylaki, 1976). The cline will block the flow of neutral alleles over a region of chromosome roughly 2s/t map units long. However, a slightly advantageous allele will be little affected, and must be very tightly linked to be delayed for long.},
  author       = {Barton, Nicholas H},
  issn         = {1365-2540},
  journal      = {Heredity},
  number       = {3},
  pages        = {333 -- 339},
  publisher    = {Springer Nature},
  title        = {{Gene flow past a cline}},
  doi          = {10.1038/hdy.1979.86},
  volume       = {43},
  year         = {1979},
}