Chromosome number in melocyte of drosophila (fruit fly) is

Options

A. 2
B. 4
C. 6
D. 8

Answer

To determine the chromosome number in the melocyte of Drosophila (fruit fly), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: We are dealing with Drosophila, commonly known as the fruit fly. This organism is widely used in genetic research.

2. **Understand Chromosome Composition**: Drosophila has a total of 4 chromosomes. This includes both autosomes and sex chromosomes.

3. **Differentiate Chromosome Types**: Among these 4 chromosomes:
- There are 2 sex chromosomes (XY for males and XX for females).
- There are 2 autosomes.

4. **Determine the Chromosome Number in Melocytes**: Melocytes are a type of cell in Drosophila. The chromosome number in somatic cells (including melocytes) is the diploid number, which is the total number of chromosomes present in the organism.

5. **Conclusion**: Since Drosophila has a total of 4 chromosomes (2 autosomes and 2 sex chromosomes), the chromosome number in the melocyte of Drosophila is 4.

### Final Answer:
The chromosome number in the melocyte of Drosophila (fruit fly) is 4.

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