According to the operon theory,the function of the regulator gene is to
A) code for enzymes in a metabolic pathway.
B) serve as an on/off switch for transcription.
C) code for a repressor molecule that can bind to the operator.
D) bind to the RNA polymerase molecule.
E) bind to the promoter.

Question

Quizplus · Accepted Answer

Regulator genes are located outside the operon and code for a protein that will bind to the operator close to the promoter region where RNA polymerase must bind to initiate transcription of the gene. This protein is a repressor that keeps the RNA polymerase from binding and transcribing the gene.Bloom's

According to the Operon Theory,the Function of the Regulator Gene