Lecture Outline. Early Sexual Development Hormonal Control of Sexual Behavior Neural Control of Sexual Behavior. Markers of Sex. Genetic: XX or XY (23rd chromosome pair) Gonadal: testes or ovaries Hormonal: Estrogen/androgen Internal reproductive: presence of
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Deficit in adrenal cortisol release
Excess adrenal androgens
Turner’s syndrome- XO, apparent female no ovaries
Sex reassignments-1975 twin’s case.
Other species- e.g. Hyena
Increasingly earlier onset of puberty in humans
No real external hermaphrodites