What is spermatogenesis? Explain the process of spermatogenesis.

Explanation

It is the process of formation of spermatozoa (sperms) in the testis from the immature male germ cells (Spermatogonia)
The spermatogonia within the seminiferous tubule multiply by mitotic division and increase in numbers. Each spermatogonium is diploid and contains 46 chromosomes.
Some of the spermatogonia called primary spermatocytes undergo first meiosis leading to the formation of two equal, haploid cells called secondary spermatocytes, with 23 chromosomes each.
The secondary spermatocytes undergo second meiotic division to produce four equal, haploid spermatids.
The spermatids are transformed into spermatozoa (sperms) by the process called spermiogenesis
Sperm heads become embedded in the sertoli cells, and are finally released from the seminiferous tubules by the process called spermiation.