Cellular and Molecular Pathways Regulating Mammalian Sex Determination

Abstract excerpt

In mammals, sex is determined by the presence or absence of a single gene on the Y chromosome, Sry. Sry, a member of the high mobility group family of transcription factors, is required to initiate male-specific pathways and repress female-specific pathways. Expression of Sry in the gonad, beginning at 10.5 days postcoitum, leads to the differentiation of the somatic supporting cell precursors as Sertoli cells....

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