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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- Spring '12