Gene flow and gene flux shape evolutionary patterns of variation in Drosophila subobscura.

ABSTRACT: Gene flow (defined as allele exchange between populations) and gene flux (defined as allele exchange during meiosis in heterokaryotypic females) are important factors decreasing genetic differentiation between populations and inversions. Many chromosomal inversions are under strong selection and their role in recombination reduction enhances the maintenance of their genetic distinctness. Here we analyze levels and patterns of nucleotide diversity, selection and demographic history, using 37 individuals of Drosophila subobscura from Mount Parnes (Greece) and Barcelona (Spain). Our sampling focused on two frequent O-chromosome arrangements that differ by two overlapping inversions (OST and O(3+4)), which are differentially adapted to the environment as observed by their opposing latitudinal

SUBMITTER: Pegueroles C 

PROVIDER: S-EPMC3656635 | biostudies-literature | 2013 Jun

REPOSITORIES: biostudies-literature