Amino acid Leucine is coded by 6 triplet codons: UUA, UUG, CUU, CUC, CUA and CUG.
Which of the following is most relevant for the statement given?

Options

A. Codes are non-overlapping
B. Degeneracy of code
C. Codes are commaless
D. Three adjacent nitrogen bases specifies one amino acid

Answer

To solve the question regarding the amino acid leucine and its coding triplet codons, we need to analyze the statements provided and determine which one is most relevant to the information given about leucine.

### Step-by-Step Solution:

1. **Understanding the Codons**:
- The question states that the amino acid leucine is coded by six triplet codons: UUA, UUG, CUU, CUC, CUA, and CUG.
- This indicates that multiple codons can specify the same amino acid, which is a key feature of the genetic code.

2. **Evaluating the Statements**:
- **Statement 1: Codes are non-overlapping**:
- This means that each nucleotide in the sequence is part of only one codon. While this is true, it does not specifically relate to the fact that leucine is coded by multiple codons.

- **Statement 2: Degeneracy of code**:
- Degeneracy refers to the phenomenon where a single amino acid can be encoded by more than one codon. Since leucine is represented by six different codons, this statement is highly relevant.

- **Statement 3: Codes are comma-less**:
- This means that there are no gaps or punctuation in the genetic code. While this is a characteristic of the genetic code, it does not specifically pertain to the coding of leucine.

- **Statement 4: 3 adjacent nitrogen bases specify 1 amino acid**:
- This statement is generally true as codons are made up of three nucleotides. However, it does not capture the essence of the question regarding the multiple codons for leucine.

3. **Conclusion**:
- The most relevant statement in relation to the coding of leucine by multiple codons is **Statement 2: Degeneracy of code**. This concept directly addresses the fact that multiple codons can encode the same amino acid, which is exemplified by leucine.

### Final Answer:
The most relevant statement is **Degeneracy of code**.