Assertion :- The DNA strand which does not code for anything is referred to as coding strand.
Reason :- Coding strand sequence are same as RNA and this strand contain uracil at the place of thymine.

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 Assertion.
C. If Assertion is True but the Reason is False.
D. If both Assertion & Reason are False.

Answer

To solve the question, we need to evaluate the assertion and reason provided:

**Assertion:** The DNA strand which does not code for anything is referred to as the coding strand.

**Reason:** Coding strand sequences are the same as RNA, and this strand contains uracil in place of thymine.

### Step-by-Step Solution:

1. **Understanding the Assertion:**
- The assertion states that the DNA strand which does not code for anything is referred to as the coding strand.
- In molecular biology, the coding strand (or sense strand) is the strand of DNA that has the same sequence as the mRNA (except for the substitution of uracil for thymine).
- However, the assertion incorrectly describes the coding strand as one that "does not code for anything." In fact, the coding strand does code for proteins.

2. **Understanding the Reason:**
- The reason states that coding strand sequences are the same as RNA and that this strand contains uracil in place of thymine.
- While it is true that the coding strand has the same sequence as the RNA (except for thymine being replaced by uracil in RNA), the coding strand itself does not contain uracil; it contains thymine.
- Therefore, the reason is also incorrect.

3. **Conclusion:**
- Since the assertion is incorrect (the coding strand does code for something) and the reason is also incorrect (the coding strand contains thymine, not uracil), we conclude that both the assertion and the reason are false.

### Final Answer:
Both the assertion and the reason are incorrect.

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