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12th Class Biology Molecular basis of Inheritance / विरासत का आणविक आधार Question Bank MCQs - Molecular Basis of Inheritance

  • question_answer
    In DNA 20% bases are adenine. What percentage of bases are pyrimidines?

    A) 30%                 

    B) 60%   

    C) 50%   

    D) 20%

    Correct Answer: C

    Solution :

    [c] The percentage of bases which are pyrimidines is 50%. According to Chargaff's rule + G = C + = 50% (Purines) (Pyrimidines) If = 20%, then T = 20% C + T = 50% C = 50%-20% = 30% Total percentage of pyrimidine bases (T+C) are 20 + 30 = 50%


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