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 ?
$1:3$
$1:4$
$3:1$
$4:1$
The graafian follicle now ruptures to release the secondary oocyte (Ovum) from the ovary by the process called
Test tube baby means a baby born when
Location - function : Testis and Ovary
True coelom is a space between the body wall and alimentary canal. It is lined by
The blastula of prototherians is called