Massive amount of yolk present in the vegetal region of the egg makes an egg:

Name a cell that is found arrested in the diplotene stage for months or years. Comment in $2-3$ lines on how it completes its cell cycle.

If $2n = 16$ in a primary spermatocyte which is in the metaphase of the first meiotic division,what shall be the total number of chromatids in each of the secondary spermatocytes?

In the testis,the immature germ cells produce sperm by $...A...$ at puberty. $...B...$ present on the inside wall of seminiferous tubules multiply by $...C...$ division and increase their number. Identify $A$,$B$,and $C$ from the above statement.

The cavity present in the Graafian follicle is:

What is the $Antrum$?