Module 4 BIO 322 Test Questions and Correct Answers

XY sex chromosomes present in males XX sex chromosomes present in females sexual orientation erotic responsiveness displayed toward member of one or the other sex gonadal sex presence of male and female gonads gender collection of social behaviors and mental states that typically differ between males and females anatomical sex differences in external genitalia and other sexual characteristics chromosomal sex -distribution of sex chromosomes (XX/XY) -determines gonadal differentiation Y presence of this chromosome is crucial for male differentiation 5-a-reductase enzyme that converts testosterone to DHT hormones determine sexual differentiation of the nervous system estrogen and progesterone "female hormones" produced by the ovaries SRY the sex determining gene ovaries results from presence of XX chromosomes cholesterol precursor for all sex steroids testes results from presence of XY chromosomes penis results from release of testosterone vagina results from the absence of testosterone aromatase enzyme that converts testosterone to estradiol