Question

Differentiate between spermatogenesis and spermiogenesis.

Answer 1

Sr. No.	Feature	Spermatogenesis	Spermiogenesis
1.	Definition	It is the complete process of the formation of mature male gametes (spermatozoa) from diploid spermatogonia.	It is the final stage of spermatogenesis, where non-motile spermatids are transformed into motile spermatozoa.
2.	Nature of Process	This process involves both mitotic and meiotic cell divisions to increase the cell count.	This process involves no cell division; it is only a structural metamorphosis or differentiation of cells.
3.	Outcome	It starts with a single diploid cell and results in the formation of four haploid spermatids.	It results in the conversion of a round, heavy spermatid into an elongated, light, and functional sperm.
4.	Key Changes	It involves stages of multiplication, growth, and maturation to form various intermediate cell types.	It involves specific changes like acrosome formation, nucleus condensation, and the development of a tail.