chromosomes

• we all start as female in the womb
• biological approach argues that it causes a physical different in sex which cases gendered behaviour
• all normal eggs produced by an ovary as an X chromosome
• sperm cells then either carry an X or Y chromosome
• the babies sex is determined by the sperm that fertilises the egg
• the Y chromosome carries the gene called the sex determining region Y or SRY
• SRY gene causes testes to develop into X embryo and thes produce androgens