Negative control occurs when
A) a regulatory protein binds to RNA polymerase and shuts down the process of transcription.
B) a regulatory protein binds to RNA and shuts down the process of transcription.
C) a regulatory protein binds to DNA and shuts down the process of transcription.
D) a regulatory protein binds to DNA polymerase and shuts down the process of transcription.

Question

Quizplus · Accepted Answer

In negative control, a regulatory protein binds to DNA and shuts down the process of transcription. This prevents RNA polymerase from accessing the DNA and/or initiating transcription. Choice A and B both refer to negative regulation, but not necessarily negative control. Choice D is incorrect as DNA polymerase is not involved in the process of transcription, but rather in DNA replication.

Negative Control Occurs When