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    Question

    Which form of DNA helix is predominantly present in

    cell?
    A A – form Correct Answer Incorrect Answer
    B Z – Form Correct Answer Incorrect Answer
    C B – Form Correct Answer Incorrect Answer
    D T – Form Correct Answer Incorrect Answer

    Solution

    The most common form, present in most DNA at neutral pH and physiological salt concentrations, is B-form. That is the classic, right-handed double helical structure. 

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