The process of the production of sperms from the immature germ cells in males is called spermatogenesis.The germ cell of seminiferous tubules increase in numbers by mitotic division. Each spermatogonium is diploid and consists with 46 chromosomes. Some of the spermatogonia i.e primary spermatocytes periodically undergo meiosis. A primary spermatocyte completes the first meiotic division (reduction division) that leads to formation of two equal, haploid cells called secondary spermatocytes. It contains only 23 chromosomes in each. The secondary spermatocytes undergo the second meiotic division to produce four equal, haploid spermatids. The spermatids are further transformed into spermatozoa (sperms) by the process called spermiogenesis.