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NEET AIPMT SOLVED PAPER 2001

  • question_answer
                    Which of the following is correct about H-bonding in nucleotide?                                             

    A)                 A-T, G-C              

    B)                 A-G, T-C              

    C)                 G-T, A-C              

    D)                 A-A, T-T

    Correct Answer: A

    Solution :

                    The structure of DNA molecule is a double helicle structure. In this structure double helix are made up of polynucleotide chains which are held together by H-bonds. In these helixes the adenine (A) base is linked with thymine (T) by two H-bonds and guanine (G) is linked with cytocine (C) by three H-bonds as A=T, and G \[\equiv \]C.


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