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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which of the following statement is true about primary oocytes
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undergo meiosis I forming secondary oocyte
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is a haploid cell
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develop from oogonia
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arrested at prophase I until puberty
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Explanation:
Detailed explanation-1: -The primary oocytes (2n) in female ovaries begin their meiosis in the fetal stage but become arrested in prophase I of meiosis I. When a female hits puberty these arrested primary oocytes (2n) completes meiosis I to form large secondary oocyte (n) and small first polar body(n). Meiosis I is followed by meiosis II.
Detailed explanation-2: -Oocytes are arrested at the first meiotic prophase, held in meiotic arrest by the surrounding follicle cells until a surge of LH from the pituitary stimulates the immature oocyte to resume meiosis. Meiotic arrest depends on a high level of cAMP within the oocyte.
There is 1 question to complete.