National League for Nursing (NLN PAX) Practice Exam

Question: 1 / 495

How many pairs of chromosomes are present in a normal human somatic cell?

22.

23.

In a normal human somatic cell, there are 23 pairs of chromosomes, which means a total of 46 individual chromosomes. Each somatic cell contains two sets of chromosomes, one inherited from each parent. This ensures the individual has a complete set of genetic instructions for their growth, development, and functioning.

The 23 pairs consist of 22 pairs of autosomes and 1 pair of sex chromosomes. The sex chromosomes determine the individual's sex (XX for females and XY for males). When considering the structure of chromosomes in somatic cells, it's important to recognize that they exist in pairs, which contributes to genetic diversity through sexual reproduction. Thus, the accurate count of chromosome pairs in a normal human somatic cell is 23.

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24.

46.

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