Most favourite and ideal material for researches in genetics is

Options

A. Housefly
B. Mosquito
C. Frog
D. Fruitfly.

Answer

**Step-by-Step Solution:**

1. **Identify the Options**: The question presents four options: housefly, mosquito, frog, and fruit fly.

2. **Evaluate Each Option**:
- **Housefly**: While it is a common organism, it is not the most favored for genetic studies.
- **Mosquito**: Important in disease research, but not primarily for genetics.
- **Frog**: Used in developmental biology, but not the ideal organism for genetic studies.
- **Fruit Fly**: Known scientifically as Drosophila melanogaster, it is widely used in genetic research.

3. **Reasons for Choosing Fruit Fly**:
- **Short Generation Time**: Fruit flies have a generation time of about two weeks, allowing for rapid studies of genetic changes.
- **Lab Breeding**: They can easily survive and breed in laboratory conditions, making them convenient for experiments.
- **Ideal Body Size**: Their size is manageable; they are large enough to observe without a microscope yet small enough to maintain large cultures.
- **Large Chromosomes**: Fruit flies have large chromosomes that are useful for chromosomal studies, making it easier to observe genetic mutations.
- **Observable Phenotypes**: Many traits, such as eye color, are easily observable and controlled by specific genes, facilitating genetic analysis.

4. **Conclusion**: Based on the above reasons, the most favorite and ideal material for researchers in genetics is the **fruit fly** (Drosophila melanogaster).

**Final Answer**: Fruit Fly

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