Robertsonian fusion triggers recombination suppression on sex chromosomes in Coleonyx geckos.

ABSTRACT: The classical hypothesis proposes that the lack of recombination on sex chromosomes arises due to selection for linkage between a sex-determining locus and sexually antagonistic loci, primarily facilitated by inversions. However, cessation of recombination on sex chromosomes could be attributed also to neutral processes, connected with other chromosome rearrangements or can reflect sex-specific recombination patterns existing already before sex chromosome differentiation. Three Coleonyx gecko species share a complex X₁X₁X₂X₂/X₁X₂Y system of sex chromosomes evolved via a fusion of the Y chromosome with an autosome. We analyzed synaptonemal complexes and sequenced flow-sorted sex chromosomes to investigate the effect of chromo

SUBMITTER: Lisachov A 

PROVIDER: S-EPMC10509250 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature