Punjab Medical Punjab - MET Solved Paper-2009

  • question_answer
    The initiation codon in eukaryotes is

    A)  AUG                                    

    B)  UGA

    C)  UAG                                    

    D)  UAA

    Correct Answer: A

    Solution :

    The codon present in the beginning of a functional gene is called initiation codon. It marks the message for a polypeptide chain. This initiation codon is AUG in most of the cases and it codes for methionine (met) in eukaryotes and for N-formyl methionine (f-met) in prokaryotes less often GUG also serves as initiation codon in bacterial protein synthesis and codes for valine. UAG, UGA and UAA are termination codons or non-sense codons.


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