RAJASTHAN PMT Rajasthan - PMT Solved Paper-2011

  • question_answer
    The two strands of the DNA double helix are

    A)  held together by

    B)  hydrogen bonds

    C)  hydrophobic bonds

    D)  peptide bonds phosphodiester bonds

    Correct Answer: A

    Solution :

    Watson and Crick proposed double helical model of DNA. The two polynucleotide chains are bonded to form double helix by hydrogen bonds. There are two hydrogen bonds between A and T while three hydrogen bonds between G and C.


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