PSYC 342 Lecture Notes - Lecture 8: Xist (Gene), Congenital Adrenal Hyperplasia, Secondary Sex Characteristic

• School: McGill University
• Department: Psychology
• Course: PSYC 342
• Professor: Annie Duschesne

Document Summary

In mammals, sexual differentiation follows the gene to gonad to genitalia. Y chromosome, which contains the sry gene, is essential to the gonadal and genital sexual development in males. The considered normal sexual differentiation of genitals is binary (males or females) In general, males" genitals and reproductive system development requires substances secreted from the testes. Hormonal levels: initiation of the hpg axis (tanner stage 2) Physiological levels: initiation of the reproductive period. Process of masculinization and defeminization is active (sry and other genes) Process of feminization and demasculinization is also active (genes that orchestrate the development of the female and suppress certain male components) The sry gene does not guarantee a male, but rather pushes towards the male dimorphic balance. Some features of gonads have the potential to revert. For example, if you takes the genes that push toward the development of a female dimorphic and you implant those in a male, those genes could potentially override the.