PMDC Verified Question 93 of 94
Number of pairs of autosomes in humans is:
A
23
B
21
C
24
D
22
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: 22
Concept:

Human chromosomes are categorized into autosomes (which determine general body traits) and sex chromosomes (which determine biological sex).

Solution:

  • A normal human somatic cell contains a total of 46 chromosomes, arranged in 23 pairs.
  • Out of these 23 pairs, exactly 22 pairs are autosomes (homologous in both males and females).
  • The 23rd pair consists of the sex chromosomes (XX in females, XY in males).


Why other options are incorrect:

  • 23: This is the total number of chromosomal pairs, not just the autosomes.

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