EMBRYOLOGY
FEMALE SEX GLAND OVARIES ÖOGENESIS AND MENSTRUAL CYCLE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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When does oogenesis begin?
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at birth
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before birth
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at the onset of adulthood
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at the onset of puberty
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Explanation:
Detailed explanation-1: -Oogenesis is the creation of an egg (also known as an ovum or oocyte) in the female foetus. Oogenesis starts in the foetus at around 7 weeks’ gestation, when primordial germ cells colonize the newly formed ovary.
Detailed explanation-2: -Oogenesis begins during embryonic development but is completed only at puberty of the secondary oocyte with the sperm.
Detailed explanation-3: -No, oogenesis begins during embryonic development, and the ovaries do not add any more oogonia after birth.
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