AFMC AFMC Solved Paper-2007

  • question_answer
    The length of one turn of the helix in a B- form DNA is approximately

    A) 0.34 nm                               

    B) 20 nm

    C) 2 nm                     

    D) 3.4 nm

    Correct Answer: D

    Solution :

    B-form of DNA shows right handed coiling which contains 10 base pairs in each turn. One complete turn of DNA occupies 34 A distance so in nm it will 3.4 nm because


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