$A$ : After menopause the levels of blood gonadotropins will rise markedly.
$R$ : At the time of menopause all the ovarian follicles are converted into follicular atresia and the ovaries are not responding to the gonadotropins

To reduce the weight of spermatozoan and enhance its motility nucleus undergoes which of the following change

During embryonic development, the establishment of polarity along anterior/ posterior, dorsal/ventral or medial/lateral axis is called

The size of the egg chiefly depends upon the

A change in the amount of yolk and its distribution in the egg will affect