Question

    DNA exists as a double helix as a result of hydrogen

    bonding between: 
    A Sugar molecules Correct Answer Incorrect Answer
    B Phosphate groups Correct Answer Incorrect Answer
    C Nucleohistones Correct Answer Incorrect Answer
    D Nucleosides Correct Answer Incorrect Answer

    Solution

    DNA exists as a double helix as a result of hydrogen bonding between nucleosides. 

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