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Question

The number of nuclei present in a zygote


A

None

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B

One

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C

Two

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D

Four

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Solution

The correct option is B

One


The correct option is B.

Explanation of the correct option:

  1. The zygote has a single nucleus, they are uni-nucleate.
  2. The zygote is formed by the fusion of male and female gametes.
  3. The pronuclei of sperm and egg fuse to form a single diploid nucleus (2n).
  4. Sperms and eggs have a haploid (n) number of chromosomes.
  5. They are formed by meiotic division.

Final answer: The number of nuclei present in a zygote is one.


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