Assertion : Hybridomas are formed by fusing lymphocytes and tumour cells called myeloma.
Reason: Hybridomas are used to produce monoclonal antibodies.

Options

A. If both Assertion and Reason are true and Reason is correct explanation of Assertion.
B. If both Assertion and Reason are true but Reason is not correct explanation of Assertion.
C. If Assertion is true but Reason is false.
D. If both Assertion and Reason are false.

Answer

To analyze the given assertion and reason, we will break down the information step by step.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that hybridomas are formed by fusing lymphocytes and tumor cells called myeloma.
- This is true because hybridomas are indeed created by the fusion of B lymphocytes (a type of white blood cell) with myeloma cells (tumor cells that can grow indefinitely).

2. **Understanding the Reason**:
- The reason states that hybridomas are used to produce monoclonal antibodies.
- This is also true. Hybridomas are specifically designed to produce large quantities of a single type of antibody, known as monoclonal antibodies, which are targeted against specific antigens.

3. **Evaluating the Relationship**:
- While both the assertion and the reason are correct, we need to evaluate if the reason correctly explains the assertion.
- The assertion explains how hybridomas are formed, while the reason explains what hybridomas are used for. However, the reason does not explain why the fusion of lymphocytes and myeloma cells results in the production of monoclonal antibodies.

4. **Conclusion**:
- Both the assertion and the reason are correct statements, but the reason does not provide a correct explanation for the assertion. Therefore, the correct answer is that both statements are true, but the reason is not the correct explanation for the assertion.

### Final Answer:
- **Assertion**: True
- **Reason**: True
- **Conclusion**: The reason does not correctly explain the assertion.

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