Here's a breakdown:
* Codon: A sequence of three nucleotides (Adenine, Guanine, Cytosine, Thymine) within a messenger RNA (mRNA) molecule.
* Start Codon: The codon that initiates the process of translation, where mRNA is used to create a protein.
* Methionine: An amino acid that is typically the first amino acid incorporated into a protein during translation.
Therefore, AUG signals the start of protein synthesis, instructing the ribosome to begin building a protein chain, starting with methionine.
