How many pairs of chromosomes present in human cell ?

Options

A. 46
B. 23
C. 22
D. 44

Explanation

To determine how many pairs of chromosomes are present in a human cell, we can follow these steps:

1. **Understanding Chromosomes**: First, we need to know what chromosomes are. Chromosomes are structures within cells that contain DNA and genes. In humans, chromosomes come in pairs.

2. **Total Number of Chromosomes**: In a typical human cell, there are a total of 46 chromosomes.

3. **Calculating Pairs of Chromosomes**: Since chromosomes exist in pairs, we divide the total number of chromosomes by 2.
- Calculation: 46 chromosomes ÷ 2 = 23 pairs of chromosomes.

4. **Identifying Types of Chromosomes**: Among these 23 pairs:
- 22 pairs are called autosomes, which are the same in both males and females.
- 1 pair is the sex chromosomes, which differ between males (XY) and females (XX).

5. **Conclusion**: Therefore, the total number of pairs of chromosomes present in a human cell is 23.

### Final Answer:
The number of pairs of chromosomes present in a human cell is **23**.