Question

    The initial codons

    are
    A AUG Correct Answer Incorrect Answer
    B GUG Correct Answer Incorrect Answer
    C Both (A) and (B) Correct Answer Incorrect Answer
    D None of the above Correct Answer Incorrect Answer

    Solution

    Initiator codons are AUG and GUG. The beginning codon in most cases is AUG, which otherwise codes for methionine. On mRNA, the initiating codon is usually AUG, although it can alternatively be GUG.

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