Article
Allele substitution at a flower colour locus produces a pollinator shift in monkeyflowers.
Nature - 13 Nov 2003
Bradshaw H D, Schemske Douglas W
Abstract excerpt
The role of major mutations in adaptive evolution has been debated for more than a century. The classical view is that adaptive mutations are nearly infinite in number with infinitesimally small phenotypic effect, but recent theory suggests otherwise. To provide empirical estimates of the magnitude of adaptive mutations in wild plants, we conducted field studies to determine the adaptive value of alternative...
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