Sex Differentation Flashcards
What happens with the presence of TDF?
Presence of TDF
What gene does the Y chromosome carry and what does it produce?
SRY-1 which makes a protein TDF
What are the parts of an undifferentiated fetus at 6 weeks?
Glans
Labioscotal swelling
Urethral groove
Anus
What hormone affects the hypothalamus? And what is the origin of brain gender?
Testosterone and the hypothalamus is responsible for brain gender.
What is androgen insensitivity syndrome?
Genetically a male( internal testes). Receptors for testosterone are faulty. Prone to cancer, females, no masculinity of the brain= females.
Androgenital syndrome?
Not enough testosterone to completely masculinize genitals. Genetically females with partial male genitals. Brain exposure to hormone determines the gender.
What defines sexual orientation?
Who you want to have sex with ( not who you have sex with)
What percentage of males and females are heterosexual?
4-6% of men and 1-2% of women
What are possible gender orientation factors? And what is not one?
Genetics and non genetic biological factors. Environmental factors do not play a role.
Twin studies show that homosexuality is _ % genetic.
70% genetic
Odds of homosexuality increase with each…. Son.
Succesive
What role do environmental factors play in homosexuality?
More to so with acknowledgement of and the way it is expressed rather than orientation itself.
