||It occurs in seminiferous tubules of testes.
||It occurs in ovaries of female.
||It results in the production of four sperm cells, all of which are functional.
||It results in the formation of only one large egg cell or ovum and three polar bodies.
||Mature sperms are very small and active.
||Mature eggs are very large and passive.
||Spermatogenesis is completed in the testis.
||The secondary oocyte is released from the ovary and thus formation of egg takes place outside the ovary.
||Spermatid undergoes spermiogenesis to get transformed into a sperm.
||No such stage takes place during egg formation.
||Millions sperm produce per day.
||One ovum per 28 day.
||Occurs throughout adult life.
||Ends at menopause.
||Begins at puberty.
||Begins in fetus.
||Involved in gamete production in germ line epithelium.
||Not involved in gamete production in germ line epithelium.
||It is a continuous process.
||It is not a continuous process.
||Growth phase is short.
||Growth phase is prolonged.
||It takes 74 days to complete.
||It takes days to years.
||It forms motile male gamete.
||It forms non-motile female gametes.
||Sertoli cells are present.
||Sertoli cells are absent
Differences between Spermatogenesis and Oogenesis