You asked: Where does the secondary oocyte undergo meiosis 2?

Where does an oocyte complete meiosis 2?

After ovulation the oocyte is arrested in metaphase of meiosis II until fertilization. At fertilization, the secondary oocyte completes meiosis II to form a mature oocyte (23,1N) and a second polar body.

Under what situation does a secondary oocyte complete meiosis II?

The secondary oocyte completes meiosis II only when fertilized by a spermatozoan. After fertilization is initiated, the secondary oocyte begins its second meiotic division, resulting in the formation of a mature ovum and another polar body. At this point, the ovum is ready to fuse with the spermatozoan.

At what point is meiosis 2 completed for the female gamete?

The answer is c) fertilization. The female gamete stays locked in metaphase II until fertilized by the male gamete.

What event is necessary for an oocyte to complete meiosis II?

The Zygote. Recall that at the point of fertilization, the oocyte has not yet completed meiosis; all secondary oocytes remain arrested in metaphase of meiosis II until fertilization. Only upon fertilization does the oocyte complete meiosis.

Under what circumstances does a secondary oh complete meiosis 2?

Meiosis of a secondary oocyte is completed only if a sperm succeeds in penetrating its barriers. Meiosis II then resumes, producing one haploid ovum that, at the instant of fertilization by a (haploid) sperm, becomes the first diploid cell of the new offspring (a zygote).

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Under what circumstances does a secondary oocyte complete meiosis II quizlet?

Completion of Meiosis at fertilization

-If fertilization occurs, the secondary oocyte will complete meiosis II to form one large ovum (fully mature) and a second polar body that gets degenerated.

How is the secondary oocyte produced quizlet?

A secondary oocyte is an oocyte that has completed the first stage of meiosis and is frozen in the secondary stage of meiosis in metaphase. This only occurs in a mature follicle. … This is a follicle that has matured and has a plurilamina cells and these are follicular cells that are surrounding the follicle.