Genes and Hormones

At conception, if the father contributes an X chromosome, the baby will be a female, if a Y, the baby will be male.

GENES

Up until 6 weeks, gonads are indentical.

• The Y chromosome controls development of gaonds producing male sex organs; in the 6th week, the Y chromosome produces a protein to turn the gonads into testes.
• If this protein isn't present, the gonads develop into ovaries.

HORMONES

• The testes release androgens which then makes the Wolffian System develops (males).
• When no androgens…