First triplet codon to be deciphered was

Options

A. UUU
B. AAA
C. CTA
D. CCC

Answer

To solve the question "First triplet codon to be deciphered was," we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Triplet Codons**:
- A triplet codon consists of three nucleotides in mRNA that correspond to a specific amino acid. Each codon is part of the genetic code that translates mRNA into proteins.

2. **Identify the Options Given**:
- The options provided are UUU, AAA, CTA, and CCC. We need to determine which of these was the first triplet codon to be deciphered.

3. **Historical Context**:
- The deciphering of codons was a significant milestone in molecular biology. Hargobind Khurana and his colleagues played a crucial role in this research.

4. **Determine the First Deciphered Codon**:
- Among the options, the first triplet codon that was deciphered is UUU.

5. **Identify the Amino Acid Coded by UUU**:
- The codon UUU codes for the amino acid phenylalanine.

6. **Conclusion**:
- Therefore, the correct answer to the question is UUU, which is the first triplet codon to be deciphered.

### Final Answer:
The first triplet codon to be deciphered was **UUU**.

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