Site-specific genetic divergence in parallel hybrid zones suggests nonallopatric evolution of reproductive barriers.

@article{Panova2006SitespecificGD,
  title={Site-specific genetic divergence in parallel hybrid zones suggests nonallopatric evolution of reproductive barriers.},
  author={Marina Panova and Johan Hollander and Kerstin Johannesson},
  journal={Molecular ecology},
  year={2006},
  volume={15 13},
  pages={4021-31}
}
The evolution of reproductive isolation in the presence of gene flow is supported by theoretical models but rarely by data. Empirical support might be gained from studies of parallel hybrid zones between interbreeding taxa. We analysed gene flow over two hybrid zones separating ecotypes of Littorina saxatilis to test the expectation that neutral genetic markers will show site-specific differences if barriers have evolved in situ. Distinct ecotypes found in contrasting shore habitats are… CONTINUE READING

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