Chromosome number in gamete of onion is

Options

A. 8
B. 16
C. 24
D. 32

Answer

To determine the chromosome number in the gamete of an onion, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Chromosome Basics**:
- Chromosomes are structures found in the nucleus of cells, made up of DNA and proteins. They carry genetic information from parents to offspring.

2. **Identify the Diploid Number**:
- For onions, the diploid chromosome number (2n) is known to be 16. This means that in somatic (body) cells, onions have 16 chromosomes.

3. **Understand Meiosis**:
- Meiosis is the process of cell division that reduces the chromosome number by half to produce gametes (sperm and egg cells). This is crucial for sexual reproduction.

4. **Calculate the Haploid Number**:
- During meiosis, the diploid number is halved. Therefore, if the diploid number is 16, the haploid number (n) can be calculated as:
\[ n = \frac{2n}{2} = \frac{16}{2} = 8 \]

5. **Conclusion**:
- The chromosome number in the gamete of an onion is 8.

### Final Answer:
The chromosome number in the gamete of onion is **8**.

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