How many chromosomes are present in the nucleus of a human?

Options

A. 13
B. 21
C. 23
D. 46

Answer

To determine how many chromosomes are present in the nucleus of a human, follow these steps:

1. **Understand what chromosomes are**: Chromosomes are thread-like structures made up of DNA. They carry genetic information.

2. **Know the number of chromosome pairs in humans**: Humans have 23 pairs of chromosomes.

3. **Calculate the total number of chromosomes**: Since there are 23 pairs, you multiply the number of pairs by 2 (because each pair consists of two chromosomes). Therefore, 23 pairs × 2 = 46 chromosomes.

4. **Conclusion**: The total number of chromosomes present in the nucleus of a human is 46.