Similar rates of protein adaptation in <Emphasis Type="Italic">Drosophila miranda</Emphasis> and <Emphasis Type="Italic">D. melanogaster</Emphasis>, two species with different current effective population sizes |
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Authors: | Doris Bachtrog |
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Institution: | (1) Department of Integrative Biology, University of California Berkeley, 3060 Valley Life Sciences Building, 94720 Berkeley, CA, USA |
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Abstract: | Background Adaptive protein evolution is common in several Drosophila species investigated. Some studies point to very weak selection
operating on amino-acid mutations, with average selection intensities on the order of N
e
s ~ 5 in D. melanogaster and D. simulans. Species with lower effective population sizes should undergo less adaptation since they generate fewer mutations and selection
is ineffective on a greater proportion of beneficial mutations. |
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Keywords: | |
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