Assertion :- Both the strands of DNA are not copied during transcription.
Reason : Both strands of DNA show antiparallel polarity.

Options

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

Answer

To analyze the assertion and reason statements, we can break down the solution into clear steps:

### Step-by-Step Solution:

1. **Understanding the Assertion**: The assertion states that "Both the strands of DNA are not copied during transcription." This is true because during transcription, only one strand of DNA, known as the template strand, is used to synthesize mRNA. The other strand, known as the coding strand, is not copied into mRNA.

2. **Understanding the Reason**: The reason states that "Both strands of DNA show antiparallel polarity." This is also true. DNA strands are indeed antiparallel, meaning one strand runs in the 5' to 3' direction while the other runs in the 3' to 5' direction.

3. **Evaluating the Relationship**: While both statements are true, the reason does not adequately explain the assertion. The fact that the DNA strands are antiparallel does not dictate that only one strand is copied during transcription. The choice of which strand to copy is determined by the specific gene being transcribed and not solely by the antiparallel nature of the strands.

4. **Conclusion**: Therefore, we conclude that both the assertion and reason are true, but the reason is not the correct explanation for the assertion.

5. **Final Answer**: The correct answer is that both statements are true, but the reason is not the correct explanation for the assertion.