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NEET2020ZoologyHuman ReproductionActual

Meiotic division of the secondary oocyte is completed

Options

  1. AAt the time of copulation
  2. BAfter zygote formation
  3. CAt the time of fusion of a sperm with an ovum
  4. DPrior to ovulation

Correct answer

C. At the time of fusion of a sperm with an ovum

Step-by-step solution

The entry of sperm into the ovum induces completion of the meiotic division of the secondary oocyte. The second meiotic division is also unequal and results in the formation of a second polar body and a haploid ovum (ootid). Soon the haploid nucleus of the ovum fuses together to form a diploid zygote.

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