New insights into Xenopus sex chromosome genomics from the Marsabit clawed frog X. borealis.

ABSTRACT: In many groups, sex chromosomes change frequently but the drivers of their rapid evolution are varied and often poorly characterized. With an aim of further understanding sex chromosome turnover, we investigated the polymorphic sex chromosomes of the Marsabit clawed frog, Xenopus borealis, using genomic data and a new chromosome-scale genome assembly. We confirmed previous findings that 54.1 Mb of chromosome 8L is sex-linked in animals from east Kenya and a laboratory strain, but most (or all) of this region is not sex-linked in natural populations from west Kenya. Previous work suggests possible degeneration of the Z chromosomes in the east population because many sex-linked transcripts of this female heterogametic population have female-biased expression, and we therefore expected this c

SUBMITTER: Evans BJ 

PROVIDER: S-EPMC9722552 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature