Question

A human being has _____ autosomes and ______ sex chromosomes.

• A. 23 pairs, 1 pair
• B. 22 pairs, 1 pair
• C. 23 pairs, 23 pair
• D. 20 pairs, 4 pair

Answer 1

The correct option is B

22 pairs, 1 pair

In humans, each cell normally contains 23 pairs of chromosomes, total of 46. Twenty-two of these pairs, called autosomes, look the same in both males and females. The 23rd pair, the sex chromosomes, differ between males and females. Females have two copies of the X chromosome, while males have one X and one Y chromosome.