What begins to be produced in females at puberty?

What is the function of $Sertoli$ cells?

State the site of the process of oogenesis.

Which of the following is diploid $(2n)$?

Do all the gametes formed from a parent organism have the same genetic composition (identical $DNA$ copies of the parental genome)? Analyse the situation with the background of gametogenesis and provide a suitable explanation.

Where does the process of $CAPACITATION$ of sperm occur?