Divergence in proteins, mitochondrial DNA, and reproductive compatibility across the isthmus of Panama.

@article{Knowlton1993DivergenceIP,
  title={Divergence in proteins, mitochondrial DNA, and reproductive compatibility across the isthmus of Panama.},
  author={N. Knowlton and L. Weigt and L. A. Sol{\'o}rzano and D. Mills and E. Bermingham},
  journal={Science},
  year={1993},
  volume={260 5114},
  pages={
          1629-32
        }
}
It is widely believed that gene flow connected many shallow water populations of the Caribbean and eastern Pacific until the Panama seaway closed 3.0 to 3.5 million years ago. Measurements of biochemical and reproductive divergence for seven closely related, transisthmian pairs of snapping shrimps (Alpheus) indicate, however, that isolation was staggered rather than simultaneous. The four least divergent pairs provide the best estimate for rates of molecular divergence and speciation… Expand
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