The transfer RNA anticodon for the messenger RNA codon G-C-A is

Options

A. C-G-U
B. G-C-U
C. U-G-C
D. G-U-C

Explanation

To find the transfer RNA (tRNA) anticodon for the messenger RNA (mRNA) codon G-C-A, follow these steps:

### Step-by-Step Solution:

1. **Identify the mRNA Codon**: The given mRNA codon is G-C-A.

2. **Understand Base Pairing Rules**: In RNA, the base pairing rules are as follows:
- Adenine (A) pairs with Uracil (U)
- Cytosine (C) pairs with Guanine (G)

3. **Determine the Anticodon**:
- For the first base G in the mRNA codon:
- The complementary base is C (G pairs with C).
- For the second base C in the mRNA codon:
- The complementary base is G (C pairs with G).
- For the third base A in the mRNA codon:
- The complementary base is U (A pairs with U, since there is no thymine in RNA).

4. **Compile the Anticodon**:
- Therefore, the anticodon for the mRNA codon G-C-A is C-G-U.

5. **Final Answer**: The tRNA anticodon corresponding to the mRNA codon G-C-A is C-G-U.