How many pairs of autosomal chromosomes are there in normal humans?
Correct Answer: 22
Solution and Explanation
Humans possess a total of 23 pairs of chromosomes in their cells. Out of these, 22 pairs are autosomal chromosomes, which are non-sex chromosomes and carry the bulk of genetic information ranging from hair color to metabolic enzymes. The autosomal chromosomes are numbered from 1 to 22 based on their size, with chromosome 1 being the largest and chromosome 22 being relatively smaller. The 23rd pair consists of the sex chromosomes, X and Y, which determine an individual's sex. Thus, in normal humans, there are 22 pairs of autosomal chromosomes.
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