What happens upon the fertilization of the eg | vedclass

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(B) In humans,the secondary oocyte is arrested at the metaphase-$II$ stage of meiosis-$II$. The entry of the sperm into the secondary oocyte triggers

Vedclass · Accepted Answer

Second maturation division is completed

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(B) In humans,the secondary oocyte is arrested at the metaphase-$II$ stage of meiosis-$II$. The entry of the sperm into the secondary oocyte triggers the completion of the second maturation division (meiosis-$II$). This results in the formation of a haploid ovum (ootid) and a second polar body. Subsequently,the fusion of the sperm nucleus and the egg nucleus leads to the formation of a diploid zygote. While the formation of the zygote is the ultimate result,the specific event triggered by the entry of the sperm is the completion of the second maturation division.

What happens upon the fertilization of the egg nucleus with the sperm nucleus?

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