What is the correct sequence of sperm formation ?
Arrange the following events of spermatogenesis:
i. The spermatogonia give rise to 4 primary spermatocytes (2n)
ii. The spermatogonia divide mitotically to maintain the germ cells (2n)
iii. Spermiogenesis
iv. Each primary spermatocyte gives rise to 2 secondary spermatocytes (n)