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This research aims to analyze how allele frequencies change during polygenic adaptation following environmental shifts.

February 9, 2026Open Access

Dynamics of Polygenic Adaptation

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Modeling examines allele frequency changes during polygenic adaptation, indicating implications for evolution.

This research aims to analyze how allele frequencies change during polygenic adaptation following environmental shifts.
Modeled population dynamics under mutation, selection, and genetic drift.
Examined allele frequency changes at individual loci using diffusion theory.
Assessed the impact of genetic drift on the speed of polygenic adaptation.
Genetic drift slows down the speed of polygenic adaptation.
Rare and very common alleles tend to decrease during adaptation.
Alleles starting at intermediate frequencies change more rapidly, affecting the allele frequency distribution.

Wolfgang Stephan (2026) studied this question.

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