Question

The number of chromosomes in normal human body cell is
1. 43
2. 46
3. 45
4. 44

Answer 1

Correct Answer - Option 2 : 46

The correct answer is 46.

• Humans have 23 pairs of chromosomes, for a total of 46 chromosomes.

•  Every cell in the human body contains 23 pairs of such chromosomes; our diploid number is therefore 46, our 'haploid' number 23.
  • Of the 23 pairs, 22 are known as autosomes.
  • Females have a pair of X chromosomes, males have an X and Y chromosome.
  • In sexually reproducing organisms, the number of chromosomes in the body (somatic) cells typically is diploid (2n; a pair of each chromosome), twice the haploid (1n) number found in the sex cells, or gametes.