Genetic differentiation across a latitudinal gradient in two co-occurring butterfly species: revealing population differences in a context of climate change.

Abstract excerpt

Genetic differentiation within a species' range is determined by natural selection, genetic drift, and gene flow. Selection and drift enhance genetic differences if populations are sufficiently isolated, while gene flow precludes differentiation and local adaptation. Over large geographical areas, these processes can create a variety of scenarios, ranging from admixture to a high degree of population...

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