The non-sense codons are

Options

A. UUC ,UGG, UGA
B. UGG ,UAA, UGA
C. UUA ,UGA, UAG
D. UAG ,UGA, UAA

Answer

To identify the non-sense codons, also known as stop codons, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Definition**:
- Non-sense codons, or stop codons, are specific sequences of nucleotides in mRNA that signal the termination of protein synthesis. They do not code for any amino acid.

2. **Identify the Stop Codons**:
- The three main stop codons in the genetic code are:
- UAA (Ochre)
- UAG (Amber)
- UGA (Opal)

3. **Recognize Their Function**:
- These codons play a crucial role in the translation process by signaling the ribosome to stop adding amino acids to the growing polypeptide chain, effectively terminating the synthesis of the protein.

4. **Review the Options**:
- Given a list of codons, we need to identify which ones are UAA, UAG, or UGA to classify them as non-sense codons.

5. **Eliminate Incorrect Options**:
- Any codon that does not match UAA, UAG, or UGA is not a non-sense codon.

6. **Conclusion**:
- The non-sense codons are UAA, UAG, and UGA.