Nascent evolution of recombination rate differences as a consequence of chromosomal rearrangements.

ABSTRACT: Reshuffling of genetic variation occurs both by independent assortment of chromosomes and by homologous recombination. Such reshuffling can generate novel allele combinations and break linkage between advantageous and deleterious variants which increases both the potential and the efficacy of natural selection. Here we used high-density linkage maps to characterize global and regional recombination rate variation in two populations of the wood white butterfly (Leptidea sinapis) that differ considerably in their karyotype as a consequence of at least 27 chromosome fissions and fusions. The recombination data were compared to estimates of genetic diversity and measures of selection to assess the relationship between chromosomal rearrangements, crossing over, maintenance of genetic diversity

SUBMITTER: Nasvall K 

PROVIDER: S-EPMC10434929 | biostudies-literature | 2023 Aug

REPOSITORIES: biostudies-literature