12 Differences between spermatogenesis and oogenesis

As we have discussed the process of Spermatogenesis and Oogenesis in another article. Let us see here the differences between spermatogenesis and oogenesis.

Based on the core facts like the of millions of sperms, single ova once a month phenomenon we have following differences.

Differences between spermatogenesis and oogenesis

Differences between spermatogenesis and oogenesis

Sl.NoFeatureSpermatogenesisOogenesis
1OccursOccurs in maleOccurs in female
2Organs involvedSemeniferous tubules in testisOvaries
3Process outcomeFormation of sperms
from spermatogonia
Formation of ovum from oogonia
4Time spanspermatogenesis process begins at puberty and continues till the end of lifeOogenesis starts at fetal life and ceases at
menopause
5cytoplasmic divisionEqual cytoplasmic division occurUnequal cytoplasmic division occur
6Food reservesSperm contains less food reserveOvum contain lot of food reserve
7Numbers per cellFour motile male gametes i.e.sperms are formed from one oocyteOnly one non motile female gamete i.e. ovum is formed
8Recycling timeMany sperms are formed within a few daysSingle ovum is produced during each cycle (28 days)
9Meiotic divison statusMeiotic division is always completedMeiotic division is not completed until
sperm penetrates zona pellucida
10Duration of processDuration of spermatogenesis process is shortDevelopment of each oocyte begins in intrauterine life and is completed at
ovulation, so it has a long duration
11Meiotic division specialtyMeiotic divisions are not arrestedMeiotic divisions are arrested
12Numbers (capacity)Unlimited process, no predetermined
number
Process of oogenesis is limited as fixed
number of oocytes present in ovary, more cannot be formed
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