Human chromosomes MCQ — 1 Practice Questions with Answers

Human chromosomes is a Science & Technology topic in the RAS/RPSC syllabus. This page gathers exam-style Human chromosomes multiple-choice questions with correct answers and explanations, so aspirants can test recall and revise frequently examined concepts.

Practice 1 Human chromosomes multiple-choice questions with detailed answers and explanations. Ideal for RAS/RPSC exam preparation.

1 Questions Science & Technology

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Q1. The pairs of autosomes present in human beings are:

A 46

B 23

C 22 Correct

D 21

Explanation

Human beings have 46 chromosomes arranged in 23 pairs. Of these, 22 pairs are autosomes, and the remaining one pair consists of sex chromosomes. Therefore, 22 is the number of autosomal pairs. The number 46 gives the total chromosomes, not the number of pairs. The number 23 gives all chromosome pairs together, including the sex-chromosome pair. The number 21 is one pair short and does not match the standard human karyotype. The question asks specifically for pairs of autosomes, so the answer is 22.

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