How to Evolve New Vertebrate Sex Determining Genes
Sex determination in vertebrates is accomplished by gonad differentiation in the embryo, which unleashes a cascade of hormones that control sexual phenotype. The pathway by which gonad (testis or ovary) is differentiated is highly conserved in all vertebrates, but the trigger (genetic or environmental) that initiates the whole process may be quite different between lineages. Among species with genetic sex determination, the trigger gene, and its mode of action as a male- or female-dominant, or...[Show more]
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