what is the major difference between spermatogenesis and oogenesis ?
Answers
Oogenesis is the production of the ovum from oogonia inside the ovary of a female. Spermatogenesis is a continuous process which occurs after the puberty till death whereas oogenesis is a discontinuous process which occurs after the puberty till menopause.
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Answer for Class 12 Biology Students
Oogenesis:
Discontinuous process, i.e.; growth arrests at prophase I and metaphase II.
Oocyte differentiates along with cell division.
Process completes in years.
Asymmetrical cytokinesis results in formation of polar bodies.
One primary oocyte forms only one ovum.
Oogenesis starts in female foetus during embryonic development.
Oogenesis starts in ovary but completes outside the ovary in fallopian tube during fertilization.
Spermatogenesis:
Continuous process.
Differentiation occurs after completion of meiosis.
Process is completed in 74 days.
Cytokinesis is symmetrical.
One primary spermatocyte forms 4 sperms.
Spermatogenesis starts at puberty.
Spermatogenesis starts and completes within testes.
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