Gislandsaresitesof manycasesofadap4veradia4ons

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Unformatted text preview: s? •  Byrnes and Nichols (1999) collected mosquitoes from 7 Underground sites and 11 above‐ground sites •  Sequenced DNA and conducted ma4ng tests –  DNA sequences were completely different between Underground and above‐ground popula4ons: no evidence of gene flow –  None of the cross‐ma4ngs produced offspring How does specia4on occur? •  Ac4ve area of research: there are many ecological mechanisms to disrupt gene flow •  The allopatric specia4on model is likely to explain most evolu4onary history Ad...
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