High elevation increases the risk of Y chromosome loss in Alpine skink populations with sex reversal.

ABSTRACT: The view that has genotypic sex determination and environmental sex determination as mutually exclusive states in fishes and reptiles has been contradicted by the discovery that chromosomal sex and environmental influences can co-exist within the same species, hinting at a continuum of intermediate states. Systems where genes and the environment interact to determine sex present the opportunity for sex reversal to occur, where the phenotypic sex is the opposite of that predicted by their sex chromosome complement. The skink Bassiana duperreyi has XX/XY sex chromosomes with sex reversal of the XX genotype to a male phenotype, in laboratory experiments, and in field nests, in response to exposure to cold incubation temperatures. Here we studied the frequency of sex reversal in adult populati

SUBMITTER: Dissanayake DSB 

PROVIDER: S-EPMC8102603 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature