In gene regulation,negative control is exerted by a(n)
A)activator.
B)operon.
C)promoter.
D)regulator.
E)repressor.

Question

Quizplus · Accepted Answer

Negative control in gene regulation is exerted by a repressor, which blocks transcription of the gene by binding to the operator region and preventing RNA polymerase from binding to the promoter. Activators, operons, promoters, and regulators can all play roles in gene regulation, but they are not directly involved in negative control.

In Gene Regulation,negative Control Is Exerted by A(n)