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Nature 433, 23-24 (6 January 2005) | doi:10.1038/433023a; Published online 5 January 2005
Evolutionary genetics: Differentiation by dispersal
David W. Coltman1
Abstract
Gene flow between populations — caused by migration, for instance — is most often viewed as a homogenizing force in evolution. But two studies of wild birds and non-random dispersal find otherwise.
Whether or not two separate populations of a species become genetically different is thought to depend largely on gene flow. Classical population-genetics theory predicts that populations that frequently exchange individuals through dispersal will remain genetically similar1.
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