Uttarakhand PMT Uttarakhand PMT Solved Paper-2006

  • question_answer
    Suppose evolution on earth has occurred in such a way that there are 96 amino acids instead of 20. DNAhas 12 different types of bases and DNA synthesis occur in the same way as today. The minimum number of bases per DNA codon would be :

    A)  12               

    B)  8

    C)  2                

    D)  3

    Correct Answer: C

    Solution :

    If one base is coding one amino acid then \[{{(12)}^{1}}=12\]but we have 96 amino acids. Suppose two bases from one codon, then\[{{(12)}^{2}}=144\]. It is suffecient to code 96 or 20 amino acids and hence, two, bases form one codon.


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