This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mutations & Codons, Subject name: Biochemistry
[{'content': 'Sta codon is: \nSelect and explain. \nA. UAA, B. UAG, C. UGA, D. AUG', 'role': 'user'}, {'content': 'Answer: D \nExplanation: AUG : Sta Codon - Methionine First Amino acids in protein: Methionine (Eukaryotes) Formyl Methionine (Prokaryotes) Other three are stop codons: UAA, UAG, UGA', 'role': 'assistant'}]