Which of the following cells during gametogenesis is normally diploid ?
Spermatogonia
Secondary polar body
Primary polar body
Spermatid
Melotic division of the secondary oocyte is completed
Describe the process of oogenesis.
Sperms formed from $4$ primary spermatocytes are
The first meiotic division in the oogonium is completed when the egg is within the
When male ejaculates sperms during coitus of which for normal fertility at least....... percent sperms must have normal shape and size and at least ...........per cent of them must show vigorous motility