Comparative Analysis of the Shared Sex-Determination Region (SDR) among Salmonid Fishes.

ABSTRACT: Salmonids present an excellent model for studying evolution of young sex-chromosomes. Within the genus, Oncorhynchus, at least six independent sex-chromosome pairs have evolved, many unique to individual species. This variation results from the movement of the sex-determining gene, sdY, throughout the salmonid genome. While sdY is known to define sexual differentiation in salmonids, the mechanism of its movement throughout the genome has remained elusive due to high frequencies of repetitive elements, rDNA sequences, and transposons surrounding the sex-determining regions (SDR). Despite these difficulties, bacterial artificial chromosome (BAC) library clones from both rainbow trout and Atlantic salmon containing the sdY region have been reported. Here, we report the sequences for these BAC

SUBMITTER: Faber-Hammond JJ 

PROVIDER: S-EPMC4524489 | biostudies-literature | 2015 Jun

REPOSITORIES: biostudies-literature