Which of the following correctly assigns the codons for glycine ?

Options

A. GGG, GGC, GGA
B. AAA, AAG, AAC
C. AUG, AUA, AUC
D. CCC, CCG, CGA

Answer

To determine which option correctly assigns the codons for glycine, we will analyze the provided options one by one. Glycine is known to be encoded by specific codons in the genetic code.

### Step-by-Step Solution:

1. **Identify the Codons for Glycine**:
- The known codons for glycine (Gly) are:
- GGG
- GGC
- GGA
- GGU

2. **Examine Each Option**:
- **Option 1**: GGG, GGC, GGA
- All three codons (GGG, GGC, GGA) are known to encode for glycine. This option is correct.

- **Option 2**: AAA, AAG, AAC
- AAA and AAG encode for lysine, while AAC encodes for asparagine. None of these encode for glycine. This option is incorrect.

- **Option 3**: AUG, AUA, AUC
- AUG is the start codon and encodes for methionine, while AUA and AUC encode for isoleucine. None of these encode for glycine. This option is incorrect.

- **Option 4**: CCC, CCG, CGA
- CCC and CCG encode for proline, while CGA encodes for arginine. None of these encode for glycine. This option is incorrect.

3. **Conclusion**:
- The only option that correctly assigns the codons for glycine is **Option 1**: GGG, GGC, GGA.

### Final Answer:
**The correct option that assigns the codons for glycine is Option 1: GGG, GGC, GGA.**