In human females at the time of birth there are two million ova: how many of them normally reach maturity in the course of normal reproductive life
$500$
$1000$
$2000$
$5000$
It's Obvious
An atretic follicle is
Germinal epithelium gives rise to
$A$ : In frog gray cresent is formed during fertilization. $R$ : It is because the black granules move towards the point of entry of the sperm in animal half
Fertilization is fusion of
Human female reaches menopause at the age of about
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