What is true about cells during cleavage
They move from animal pole to vegetal pole
They do not grow in size
They consume little ${O_2}$
Their divisions resemble ordinary mitosis
$A$ : 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
Pituitary gland is derived from
How does zona pellucida of ovum help in preventing polyspermy ?
A woman with a typical $28 \;day$ menstrual cycle is most likely to become pregnant as a result of sexual intercourse on ..... of cycle
If Cowper's glands are removed. They will affect