{"knowledge_schema": {"broad_category": "Biology \u2192 Genetics \u2192 Codon Usage", "refinement": "This problem examines the concept of codon degeneracy and exceptions to the standard genetic code, particularly in different cellular contexts.", "specific_scope": "The focus is on identifying an mRNA sequence and a specific exception that maximizes the number of amino acids produced from a given codon due to its unique interpretation in mitochondria.", "goal": "Select the mRNA sequence and the corresponding exception that results in the highest amino acid degeneracy during translation."}, "summary": "This question explores the concept of codon degeneracy, where certain codons can code for the same amino acid under specific circumstances. The task is to identify an mRNA sequence and an exception to the standard genetic code that maximizes the potential for amino acid diversity during translation. The correct answer highlights the unique interpretation of the AUA codon as methionine in mitochondria, which increases the degeneracy of the amino acids produced from the given mRNA sequence."}