33. A couple wishes to maximize the woman\'s chances of becoming pregnant. When

Question

33. A couple wishes to maximize the woman's chances of becoming pregnant. When should they be sure to have intercourse? A. during menstruation B. 5 days after the onset of menstruation C, at ovulation or during the five days preceding it D. 3 days after the onset of menstruation 34. In recent years there has been a rise in multiple births. This rise is a result of A. delayed childbearing B. increased use of fertility drugs. assisted reproduction D. all of these. 35. How many pairs of chromosomes does the normal human being have? A. 22 B. 23 C. 44 D. 46 36. A factor that increases the probability of having a baby with Down syndrome i A, increased age of mother or father. B. parents' use of tobacco. C. parents' use of alcohol. D. a defective XY chromosome pattern

Explanation / Answer

Ans 33 C) At ovulation or during the five days preceding it

The fertile window occurs during the 10 -17 days of menstruation cycle of a woman . Woman ovulates on the 14th day of her cycle. Now since sperm can live 5 days , it can fertilise the ova of woman within these days.

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