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NEET AIPMT SOLVED PAPER 2003

  • question_answer
                    What would happen if in a gene encoding a polypeptide of 50 amino acids, 25th codon (UAU) is mutated to UAA?                                                                                                                                                                     

    A)                 A polypeptide of 49 amino acids will be formed

    B)                 A polypeptide of 25 amino acids will be formed

    C)                 A polypeptide of 24 amino acids will be formed

    D)                 Two polypeptides of 24 and 25 amino acids will be formed

    Correct Answer: C

    Solution :

                    UAA is the 'stop' codon; hence, polypeptide chain will not grow after 24th amino acid. In the absence of new initiating codon rest of codons will not be able to translate.


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