57 58t 5 60 6162 78 1179n 69 O False QUESTION 54 4.25 Think about this and answe

Question

57 58t 5 60 6162 78 1179n 69 O False QUESTION 54 4.25 Think about this and answer with logic. Not all miscarriages are caused by changes in chromosome number For example, an abnormally low level of progesterone during pregnancy could trigger menstrual-like bleeding and miscarriage. A likely treatment? Supplementing with extra progesterone to raise blood progesterone to the level normally seen in pregnancy. O True D False QUESTION 55 The sex behavior and genes experiment with fruit flies is of striking significance because it shows that, at least in fruit flies, sex anatomical development can be completely separated from sex wiring of the central nervous system for sexual behavior. The compelling result was a genetically altered fly that was anatomically female, but who courted another female with male sex behavio O True Click Save and Submit to save and submit. Click Save All Answers to save all answers

Explanation / Answer

54. True. [studies have shown Low progesterone cause infertility and recurrent pregnancy loss, treatment is exogenous supplementation.].

30. false [ the TDF is testis determining the factor of SRY gene which codes for TDF protein which determines the development embryonic male gonads( testis). The whole male characteristics( ie male external genitalia ) is determined by SRY gene ]

31. True [ as there is an absence of 21 - hydroxylase enzyme, there will be excess 17 hydroxyprogesterone--> which will be converted into androgens ( high testosterone)--> leading to virilization of masculinization of the female, this is known as primary adrenal hyperplasia ]

31. True [ binding of LH to LH receptors of the Leydig cell causes the production of testosterone, which is the most important hormone required for normal spermatogenesis ( differentiation of spermatogonia by genes of the Sertoli cell is activated by testosterone) ]

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