Sperms become non-motile in the vagina in
Less than $60$ minutes
More than $60$ minutes
$120$ minutes
$25-30$ hours
It's Obvious
Neural crest cells break off from the ________ and later move to the sides of the developing embryo to form ________
Menstrual flow occurs due to lack of
The function of amniotic cavity is
In humans, what is the ratio of the number of gametes produced from one male primary sex cell to the number of gametes produced from one female primary sex cell ?
In frog chromosome no. is reduced to half
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