50 secondary oocytes in female and 50 secondary spermatocytes in male give rise to.............. [MPPMT 1993]
(a) 50 ova and 100 sperms
(b) 100 ova and 200 sperms
(c) 200 ova and 50 sperms
(d) 100 ova and 100 sperms

the ans is option (a) because 2 secondary spermatocytes give rise to 4 spermatids that releases four sperms.Similarly 50 secondary spermatocytes will give rise to 100 spermatids and 100 sperms.
So, the ans is 50 ova and 100 sperms.