Question

when does lac operon exerts negative control?​

Answer 1

when the repressor binds the operator gene, lac operon exerts a negative control.

Answer 2

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The lac operon is under two forms of control; positive and negative control. A protein is said to exert negative control when its binding prevents an event. The repressor is an example of negative control. When the repressor is bound to the operator the RNA polymerase cannot bind to the promoter.

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