Mention the role of the codons AUG and UGA during protein synthesis.

Explanation

### Step-by-Step Solution

1. **Understanding Protein Synthesis**: Protein synthesis occurs in two main stages: transcription and translation. During translation, the ribosome assembles amino acids into a polypeptide chain based on the sequence of codons in the mRNA.

2. **Role of AUG**: The codon AUG serves as the start codon in the process of translation. It signals the ribosome to begin protein synthesis. AUG codes for the amino acid Methionine, which is the first amino acid incorporated into the polypeptide chain.

3. **Initiation of Translation**: The translation process begins when the small subunit of the ribosome binds to the mRNA at the start codon (AUG). The corresponding tRNA carrying Methionine binds to this codon, establishing the starting point for the assembly of the protein.

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