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Development of the testes in the embryo is due to: A. Production of placental es

ID: 87193 • Letter: D

Question

Development of the testes in the embryo is due to: A. Production of placental estrogen B. Presence of Mullerian hormone C. Presence of a single Y chromosome D. Increased fetal FSH secretion. E. Effects of biochemical conversion of steroid The rhythm method of birth control A relies on timing intercourse to coincide with B. depends on the ability to reliably predict the time of for the entire duration of time during which a woman does not pregnant. C. is more effective than the pill in preventing pregnancy. D. is more effective than the pill in preventing D. involves examining changes in cervical mucus following ovulation E. is based on cyclic sperm production in the male. Mullerian inhibiting hormone A. Is synthesized and secreted by Leydig genitalia. B. Stimulates development of female internal C. Prevents the development of female internal reproductive organs in an male D. Is produced in response to hCG. E. Is required for differentiation of the ducts

Explanation / Answer

(19) the answer is B i.e presence of Mullerian inhibiting hormone

as we know genitalia consists of two ducts:

1.mesonephric duct(Male): it is developed into male genitalia

2. paramesonephric duct(female) its is developed into female genitalia

the presence of antimullerian hormone inhibit the growth of paramesonephric duct and mesonephric duct develops into testes.

(20) Answer is B

rhythm control is a better method to prevent birth control by monitoring the days in which their are more chances to get pregnant.

(21)

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