Lampbrush chromosomes are found in

Options

A. Brain cells of cats
B. Ovarian cells of amphibians
C. Salivary glands of Diptera
D. Germ cells of mammalia

Answer

**Step-by-Step Solution:**

1. **Understanding Lampbrush Chromosomes**:
- Lampbrush chromosomes are a specific type of chromosome that are characterized by their unique structure, which includes loops that give them a brush-like appearance. They are notably larger than typical chromosomes.

2. **Identifying the Location**:
- To answer the question, we need to identify where lampbrush chromosomes are typically found.

3. **Evaluating the Options**:
- **Option 1: Brain cells of cat**: This option is incorrect as lampbrush chromosomes are not found in the brain cells of cats.
- **Option 2: Ovarian Cells of Amphibians**: This option is correct. Lampbrush chromosomes are primarily found in the oocytes (egg cells) of amphibians during the diplotene stage of meiosis.
- **Option 3: Salivary gland of Diptera**: This option is incorrect as salivary glands of Diptera (like fruit flies) contain polytene chromosomes, not lampbrush chromosomes.
- **Option 4: Germ cells of Mammalia**: This option is also incorrect. Germ cells in mammals do not contain lampbrush chromosomes.

4. **Conclusion**:
- Based on the evaluation of the options, the correct answer is **Option 2: Ovarian Cells of Amphibians**.

**Final Answer**: Lampbrush chromosomes are found in **Ovarian Cells of Amphibians**.

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