With inducible systems, the binding of the effector molecule to the repressor greatly reduces the affinity of the repressor for the operator, the repressor is released and transcription proceeds. The lac operon is an example of an inducible system.

What is an inducible operon?

An inducible operon is one whose expression increases quantitatively in response to an enhancer, an inducer, or a positive regulator.

How does an inducible operon work quizlet?

An inducible operon requires an inducer molecule to stimulate transcription either by inactivating a repressor protein in a negative inducible operon or by stimulating the activator protein in a positive inducible operon. ... enhancers are DNA sequences that are the binding sites of transcriptional activator proteins.