Homology in Sex Determination in Two Distant Spiny Frogs, and

Overview

Journal Animals (Basel)

Date 2024 Jul 13

PMID 38997961

Authors

Yu Xiao

Guangjiong Liao

Wei Luo

Yun Xia

Xiaomao Zeng

Affiliations

Soon will be listed here.

Abstract

Sex determination is remarkably diverse, with frequent transitions between sex chromosomes, in amphibians. Under these transitions, some chromosomes are more likely to be recurrently co-opted as sex chromosomes, as they are often observed across deeply divergent taxa. However, little is known about the pattern of sex chromosome evolution among closely related groups. Here, we examined sex chromosome and sex determination in two spiny frogs, and . We conducted an analysis of genotyping-by-sequencing (GBS) data from a total of 34 individuals to identify sex-specific makers, with the results verified by PCR. The results suggest that chromosome 1 is a homologous sex chromosome with an XY pattern in both species. This chromosome has been evolutionarily conserved across these closely related groups within a period of time. The gene is proposed to be implicated in homology across two distantly related spiny frog species as a putative candidate sex-determining gene. Harboring the gene, chromosome 1 would have been independently co-opted for sex determination in deeply divergent groups of anurans.

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