Observe the given picture and answer the following questions ?

At which region of operon , repressor protein binds and  prevents RNA polymerase from transcribing the operon ?

Operator region .

The correct answer is Option (2) -Operator region .

The repressor of the operon is synthesised (all-the-time – constitutively) from the i gene. The repressor protein binds to the operator region of the operon and prevents RNA polymerase from transcribing the operon. In the presence of an inducer, such as lactose or allolactose, the repressor is inactivated by interaction with the inducer .