→ In the male reproductive system, the process of formation of male gametes or sperms is called spermatogenesis, whereas in the female reproductive system, the formation of ovum is called oogenesis.
→ Spermatogenesis is a process that occurs in the seminiferous tubules of the testis. Whereas oogenesis occurs within the ovary of the female reproductive system.
→ Spermatogenesis starts at the onset of puberty in males, whereas, oogenesis starts at the foetal stage and after birth, this process is paused until the female attains puberty. Thus in males spermatogenesis is a continuous process whereas in females oogenesis is a discontinuous process.
→ In oogenesis, the primary oocyte undergoes unequal meiotic division and gives rise to secondary oocyte and first polar body. This small polar body further degenerates, whereas in spermatogenesis, the primary spermatocyte divides equally and give rise to secondary spermatocytes. Thus, there is no polar body formation in spermatogenesis.
→ Generally meiotic division results in the formation of four daughter cells. But in oogenesis, only one ovum is produced as the end product, whereas in spermatogenesis, four sperms are produced.