How many sperms are formed by four primary spermatocytes?
$1$
$4$
$16$
$32$
Meroblastic cleavage refers to which type of division of egg
Sperm lysins contains
Foetal membranes provide
Which is not the function of placenta ?
A boy who has not passed through puberty sustains an injury to his anterior pituitary such that $FSH$ is no longer released, but $LH$ secretion is normal. After he grows to maturity, one would expect that he would