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NDA 2021 GAT · General Knowledge · Genetics and Heredity · hard

The number of chromosomes in a normal human gamete (sperm or egg) is

Single correct option

The number of chromosomes in a normal human gamete (sperm or egg) is
  1. A. 46
  2. B. 22
  3. C. 44
  4. D. 23
Show answer and solution

Answer: (D) 23

Humans have 46 chromosomes in body cells (23 pairs). Meiosis halves this number, so each gamete has 23 chromosomes, and fertilisation restores 46 in the zygote. The number 46 is the diploid number, which is the trap here.
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Original question written in the NDA 2021 GAT pattern and checked twice for the correct answer. Not an official question paper. How we write and check questions · Corrections policy · Report a mistake