Fewpal
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Lactose or its analogues act as positive regulators of lac operon by 

(A) Attaching to i gene and preventing its expression 

(B) Increasing the synthesis of catabolite gene activator protein 

(C) Attaching to promoter region and facilitating the binding of RNA polymerase holoenzyme 

(D) Binding to repressor subunits so that the repressor cannot attach to the operator locus

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(D) Binding to repressor subunits so that the repressor cannot attach to the operator locus 

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