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NEET Biology Principle Of Inheritance And Variation Question Bank Critical Thinking

  • question_answer
    In his experiments on the chemistry of DNA, Chargaff estimated the base composition of human sperms and found that Adenine constituted 31% and Guanine 19%. The quantity of Cytosine in the DNA of human somatic cell is likely to be [BHU 1991]

    A) 31%

    B) 19%

    C) 38%

    D) 68%

    Correct Answer: B

    Solution :

    19%; because 'G' is always attached with 'C' (G ºC), thus percentage of C will always be equal to G.


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