Recombination changes at the boundaries of fully and partially sex-linked regions between closely related Silene species pairs.

ABSTRACT: The establishment of a region of suppressed recombination is a critical change during sex chromosome evolution, leading to such properties as Y (and W) chromosome genetic degeneration, accumulation of repetitive sequences and heteromorphism. Although chromosome inversions can cause large regions to have suppressed recombination, and inversions are sometimes involved in sex chromosome evolution, gradual expansion of the non-recombining region could potentially sometimes occur. We here test whether closer linkage has recently evolved between the sex-determining region and several genes that are partially sex-linked in Silene latifolia, using Silene dioica, a closely related dioecious plants whose XY sex chromosome system is inherited from a common ancestor. The S. latifolia pseudoautosomal r

SUBMITTER: Campos JL 

PROVIDER: S-EPMC5345606 | biostudies-literature | 2017 Apr

REPOSITORIES: biostudies-literature