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  3. NEET

NEET AIPMT SOLVED PAPER 1999

  • question_answer
                In operon concept, regulator gene functions as:                                                                                   

    A)             repressor

    B)                 inhibitor              

    C)             regulator

    D)                 all of these

    Correct Answer: A

    Solution :

                The regulator gene codes for a repressor protein which either binds to the operator itself (as in lac operon) blocking its activity or requires the presence of end product for binding to the operator. In any case, it represses the activity of operator.


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