The second maturation division of the mammali | vedclass

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(B) The correct answer is $B$. Oogenesis begins with the division of oogonia (gamete mother cells),which give rise to primary oocytes. These primary o

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until after the ovum has been penetrated by a sperm

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(B) The correct answer is $B$. Oogenesis begins with the division of oogonia (gamete mother cells),which give rise to primary oocytes. These primary oocytes enter prophase $I$ of meiosis and are temporarily arrested at this stage. As the follicle matures,the primary oocyte completes its first meiotic division to form a haploid secondary oocyte and a first polar body. The secondary oocyte then begins the second meiotic division but arrests at metaphase $II$. This second meiotic division is only completed after the sperm penetrates the secondary oocyte during fertilization. This process results in the formation of a second polar body and a mature haploid ovum (ootid).

The second maturation division of the mammalian ovum occurs:

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