CHLH 206- lecture 3 - February 1, 2011 The first 6 weeks...

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The first 6 weeks the fetus is female. Then dimorphosis occurs and you can differentiate between the two sexes at the 8th week. Y chromosome at conception. .. Testosterone at 6 weeks. .. sex differentiation at 8 weeks chromosomes gonadal development hormones morphological change morphological change in the nervous system behavioral sex differences Androgen Insensitivty Syndrome 1/20,400 births genetically transferred or mutation inhibits the absorption of androgen in XY fetus Results: The infant is indistinguishable from a female in appearance (it has enlarged female genitals) When they hit puberty, they dont have a flood of testosterone because it cant be produced. but, they do produce estrogen. They do not menstruate. There are lumps inside the female that are testicles and they can be removed. However, they testicles are not removed if the person wants to have kids; but they can only do so as a male. Male DNA XY, instead of two XX like women.
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This note was uploaded on 05/22/2011 for the course CHLH 206 taught by Professor Lucas during the Spring '08 term at University of Illinois at Urbana–Champaign.

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CHLH 206- lecture 3 - February 1, 2011 The first 6 weeks...

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