This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Metabolism of nucleic acids, Subject name: Biochemistry
[{'content': 'Stop codons are \nSelect and explain. \nA. UAA, B. UAG, C. UGA, D. UAC', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Terminator Codons : There are three codons which do not code for any paicular aminoacid.They ae "nonsense codons".more correctly termed as PUNCTUATOR OR TERMINATOR CODONS. They mark end of protein synthesis.These three codons are UAA,UAG,and UGA. UGA is a stop codon ,but in special circumstances,it stands for seleno-cysteine. REF :DM VASUDEVAN TEXTBOOK:7th EDITION ;Page no ;599.', 'role': 'assistant'}]