Assertion`:-` Plasmids are extrachromosomal `DNA`
Reason`:-` Plasmids are found in bacteria that is useful in genetic engineering.

Options

A. If both Assertion & Reason are True & the Reason is a correct explanation of the Assertion.
B. If both Assertion & Reason are True but Reason is not a correct explanation of the Assertiion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False

Explanation

**Step-by-Step Solution:**

1. **Understanding the Assertion:**
- The assertion states that "Plasmids are extrachromosomal DNA."
- This means that plasmids exist outside the chromosomal DNA within a cell. They are small, circular pieces of DNA that can replicate independently of chromosomal DNA.

2. **Understanding the Reason:**
- The reason states that "Plasmids are found in bacteria that is useful in genetic engineering."
- Plasmids are indeed commonly found in bacteria and are utilized in genetic engineering as vectors to transfer genetic material.

3. **Evaluating the Truth of Both Statements:**
- Both the assertion and the reason are true.
- Plasmids are classified as extrachromosomal DNA, and they play a significant role in genetic engineering.

4. **Analyzing the Relationship Between Assertion and Reason:**
- While both statements are true, the reason provided does not serve as a correct explanation for the assertion.
- The assertion describes what plasmids are, while the reason explains their utility in genetic engineering but does not explain why they are classified as extrachromosomal DNA.

5. **Conclusion:**
- The correct option is that both the assertion and reason are true, but the reason is not a correct explanation of the assertion.

**Final Answer:**
Both assertion and reason are true, but reason is not a correct explanation of the assertion.

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