Assertion :- t RNAs are specific for each amino acid but there are no t-RNAs for stop codons.
Reason : The secondary structure of t-RNA has been depicted that looks like a colver-leaf.

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 Flase.
D. If both Assertion & Reason are false.

Answer

To solve the question, we need to analyze both the assertion and the reason provided.

### Step-by-Step Solution:

1. **Understanding the Assertion**:
- The assertion states that "t RNAs are specific for each amino acid but there are no t-RNAs for stop codons."
- This is true because each tRNA molecule is associated with a specific amino acid and has an anticodon that pairs with a corresponding codon on the mRNA. However, stop codons (UAA, UAG, UGA) do not have corresponding tRNAs because they signal the termination of protein synthesis.

2. **Understanding the Reason**:
- The reason states that "The secondary structure of t-RNA has been depicted that looks like a clover-leaf."
- This is also true. The clover-leaf structure of tRNA is a well-established model that describes its secondary structure, which includes loops and stems that resemble a clover leaf.

3. **Analyzing the Relationship**:
- While both the assertion and the reason are true, the reason does not explain the assertion. The fact that tRNAs have a clover-leaf structure does not provide a rationale for why there are no tRNAs for stop codons.

4. **Conclusion**:
- Since the assertion is true and the reason is also true, but the reason does not support the assertion, we conclude that the correct answer is that the assertion is true and the reason is true, but the reason is not the correct explanation for the assertion.

### Final Answer:
The assertion is true, the reason is true, but the reason is not the correct explanation for the assertion.

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