Which statement is TRUE of two separate regulators controlling one individual operon?
A) The two regulators themselves must respond to different signals, which enables both to control the operon differently.
B) One regulator will likely control the transcription of one section of the operon, whereas the other regulator will control the other component.
C) One regulator will bind to the operator region whereas the other will bind to the promoter region so they can co-occur and co-regulate the operon.
D) Two regulators trying to control the same operon will likely result in only one being maintained after several generations.

Question

Quizplus · Accepted Answer

If two regulators control the same operon, they must respond to different signals in order to regulate the operon in distinct ways. Otherwise, one regulator would be redundant and unnecessary. Therefore, option A is the correct answer. Option B is not necessarily true, as both regulators could control different aspects of transcription in the same section of the operon. Option C is not necessarily true either, as both regulators could bind to either the operator or promoter regions, or even to other regions of the operon altogether. Option D is not likely true, as the two regulators could coexist and co-regulate the operon without one being eliminated over time.

Which Statement Is TRUE of Two Separate Regulators Controlling One