Social Sciences, asked by mohammedsharifmiya, 26 days ago

what is determined at birth

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Answered by taekimchi

Answer:

The sex of a baby is determined by its chromosome make-up at conception. ... "The Y chromosome carries a critical gene, called SRY, which acts on another gene called SOX9 to start the development of testes in the embryo. High levels of the SOX9 gene are needed for normal testis development

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