Conceptual bases for quantifying the role of the environment on gene evolution: the participation of positive selection and neutral evolution.

Abstract excerpt

To demonstrate that a given change in the environment has contributed to the emergence of a given genotypic and phenotypic shift during the course of evolution, one should ask to what extent such shifts would have occurred without environmental change. Of course, such tests are rarely practical but phenotypic novelties can still be correlated to genomic shifts in response to environmental changes if enough...

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