Single human cell is with _____ no of chromosomes

Options

A. 46 pairs
B. 23 pairs
C. 3 pairs
D. 22 pairs

Answer

To answer the question about the number of chromosomes in a single human cell, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Chromosomes**:
- Chromosomes are structures within cells that contain DNA. In humans, chromosomes come in pairs.

2. **Total Number of Chromosomes in Humans**:
- A typical human cell contains a total of 46 chromosomes. These chromosomes are organized into 23 pairs.

3. **Types of Chromosomes**:
- Out of the 23 pairs, 22 pairs are called autosomes, which are the same in both males and females. The 23rd pair consists of sex chromosomes, which determine the biological sex of the individual (XX for females and XY for males).

4. **Identifying the Correct Option**:
- The question provides options, and we need to identify the one that correctly states the number of chromosomes in a single human cell.
- The correct answer is that a single human cell has **23 pairs of chromosomes**, which totals to 46 chromosomes.

5. **Eliminating Incorrect Options**:
- The other options provided (46 pairs, 3 pairs, and 22 pairs) do not accurately represent the number of chromosomes in a single human cell:
- 46 pairs would imply 92 chromosomes, which is incorrect.
- 3 pairs would imply only 6 chromosomes, which is also incorrect.
- 22 pairs would imply 44 chromosomes, which does not account for the sex chromosomes.

### Final Answer:
- A single human cell has **23 pairs of chromosomes**.