In spermatogenesis, reduction division of chromosome occurs during conversion of
spermatogonia to primary spermatocytes
primary spermatocytes to secondary spermatocytes
secondary spermatocytes to spermatids
spermatids to sperms
B.
primary spermatocytes to secondary spermatocytes
Spermatogenesis is the formation and maturation of male gametes or spermatozoan. Sperms are produced in the seminiferous tubules of testes. Diploid spermatogonia present beneath 3 to 5 cells deep from outermost layer of seminiferous tubules, increase their number by ordinary mitotic divisions and each becomes a primary spermatogonial cell or primary spermatocyte. Each primary spermatocyte undergoes first, meiotic (reductional) division and forms two secondary spermatocytes. Each of these, without any intervention undergoes the second meiotic division and gives rise to two spermatids. Each spermatid undergoes the process of spermiogenesis to become a sperm.
