When mammary glands of a male develop similar to that of a female,this condition is known as:

Corpus luteum is not found in

Assertion: Females have less stature than males after puberty.
Reason: This happens because of the presence of $hCG$ in the blood of females.

Explain the primary concept of the male and female reproductive systems.

Which two events in the life cycle maintain the same (constant) number of chromosomes?

$I.$ Sperm cells,when released from the body and placed in a petri plate,remain alive for a much longer duration.
$II.$ Semen contains chemicals that cause the female's smooth muscles to contract.