12th Class Biology Sample Paper Biology - Sample Paper-5

  • question_answer
    Write in a few lines about Watson and Crick Model of DNA molecule. Give its potential also.

    Answer:

    The DNA molecule has the form of a twisted ladder (figure). The vertical bars of the ladder are formed by alternating deoxyribose sugar and phosphate components, while horizontal rings of the ladder are attached to the deoxyribose sugar components of the vertical bars which are composed ofpurines and pyrimidines linked up through hydrogen bonds.
     


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