Which of the following is necessary for negative control of the tryptophan operon?
A) leader sequence
B) operator
C) promoter
D) all of the above

Question

Quizplus · Accepted Answer

The operator is the site where the repressor protein binds to prevent transcription. The leader sequence is the site where the ribosome binds to initiate translation. The promoter is the site where RNA polymerase binds to initiate transcription. All three of these elements are necessary for negative control of the tryptophan operon.

Which of the Following Is Necessary for Negative Control of the Tryptophan