Unravelling the mechanisms of sex determination

More congratulations! This time to Peta Hill, who published the first paper from her PhD this week in Genome Biology and Evolution. Peta’s paper describes the similarities and differences in sex-linked genetic sequence that occur between two populations of snow skink that exhibit divergence in their sex determining systems. Peta’s results show that, despite this divergence, both populations possess sex-linked genetic sequence and XY (male) heterogamety. In addition, analysis of the linkage between these loci suggests sex chromosomes at differing stages of progressive degeneration in each population. Combined Peta’s results suggest that transitions between sex determination systems can be facilitated by relatively subtle genetic differences. Read all about it here.

Hill, P., Burridge, C.P., Ezaz, T. and Wapstra, E. (2018) Conservation of sex-linked markers among conspecific populations of a viviparous skink, Niveoscincus ocellatus, exhibiting genetic and temperature dependent sex determinationGenome Biology and Evolution. 10: 1079-1087.