define the spermetogenesis
Answers
Answer:
Spermatogenesis is a process that produces mature spermatozoa. Spermatozoa carry haploid genome, which is transmitted to an egg upon fertilization. Spermatozoa are highly specialized cells that are structurally equipped to reach and fertilize the egg.
Explanation:
Spermatogenesis is the process of the production of sperms from the immature male germ cells. It starts at puberty and usually continues uninterrupted until death, although a slight decrease in the quantity of sperm is seen with increase in age.
Process of Spermatogenesis:
The spermatogonia (2N) present at the inner side of the seminiferous tubules multiply by mitotic divisions and increase in number. They stop undergoing mitosis, grow and become primary spermatocytes (2N). Each primary spermatocyte undergoes meiosis to form two equal haploid secondary spermatocytes (N). Each secondary spermatocyte then undergoes second meiotic division to form four equal haploid cells called spermatids (N). Spermatids receive nourishment to form sperms by the process called spermiogenesis.