NEET Sample Paper NEET Sample Test Paper-74

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

    A)  12                               

    B)  2

    C)  8                                

    D)  3

    Correct Answer: B

    Solution :

    If one base is coding one ammo acid, then \[{{\left( 12 \right)}^{1}}=12\] but there are 96 amino acids suppose, two bases form one codon, then\[{{\left( 12 \right)}^{2}}=144\]. This is sufficient to code 96 or 20 amino acids and hence two, bases form one codon.


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