Reproductive Barriers and Genomic Hotspots of Adaptation During Allopatric Species Divergence.

ABSTRACT: Theory predicts that in allopatric populations, genomic divergence and reproductive barriers may be driven by random genetic drift and thereby evolve slowly in large populations. However, local adaptation and divergence under selection may also play important roles, which remain poorly characterised. Here, we address three key questions in young allopatric species: (a) How widespread are genomic signatures of adaptive divergence?, (b) What is the functional space along which young sister species show divergence at the genomic level? and (c) How quickly might prezygotic and postzygotic reproductive barriers evolve? Analysis of 82 re-sequenced genomes of the Oriental Papilio polytes species group revealed surprisingly widespread hotspots of intense selection and selective sweeps at hundreds

SUBMITTER: Deshmukh R 

PROVIDER: S-EPMC12573717 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature