Gender Determination

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  • GENDER
    • MALE
      • XY
      • Embryo
        • Gonadal Ridge at 6-7 weeks
          • Embryo
            • NO SRY GENE PRESENT- No Y chromosome is present
              • Mullerian duct and Ovaries
                • The Mullerian duct develops as no testosterone or anti-mullerian substrate is present
                  • Wolfian ducts break down and so oviducts form
        • SRY GENE PRESENT -on the Y chromosome
          • This SRY gene acts as the master switch, it contains the testes determining factor, produces protein and where the HY antigen can befound
          • Wolfian duct and testes
            • After 3 motnhs the Androgen testosterone and the anti mullerian substrate break down the mullerian ducts.
              • Fetal Penis forms due to the introduction of testorone
    • FEMALE
      • **
      • Embryo
        • NO SRY GENE PRESENT- No Y chromosome is present
          • Mullerian duct and Ovaries
            • The Mullerian duct develops as no testosterone or anti-mullerian substrate is present
              • Wolfian ducts break down and so oviducts form
  • Wolfian duct and testes
    • After 3 motnhs the Androgen testosterone and the anti mullerian substrate break down the mullerian ducts.
      • Fetal Penis forms due to the introduction of testorone

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