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NEET NEET SOLVED PAPER 2015 (Re)

  • question_answer
    The cutting of DNA at specific locations became possible with the discovery of                  

    A)  restriction enzymes      

    B)  probes

    C)         selectable markets        

    D)  ligases

    Correct Answer: A

    Solution :

                    Restriction enzymes are DNA cutting enzymes found in bacteria. A restriction enzyme recognizes and cuts DNA only at a particular sequence of nucleotides. For example, the bacterium Haemophilus aegyptius produces an enzyme named Hae III that cuts DNA wherever, it encounters the sequence. 5'-GGCC-S' 5'-C C G G-5'


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