Article
Population extinction and the genetics of adaptation.
The American naturalist - 1 Aug 2008
Orr H Allen, Unckless Robert L
Abstract excerpt
Theories of adaptation typically ignore the effect of environmental change on population size. But some environmental challenges--challenges to which populations must adapt--may depress absolute fitness below 1, causing populations to decline. Under this scenario, adaptation is a race; beneficial alleles that adapt a population to the new environment must sweep to high frequency before the population becomes...
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