In gene expression, when does negative control occur? When
A) lactose is transported into the cell.
B) a kinase adds a phosphate to DNA.
C) an activator is removed from DNA and shuts down transcription.
D) DNA is coiled too tightly for genes to be transcribed.
E) a repressor binds to DNA and shuts down transcription.

Question

Quizplus · Accepted Answer

Negative control occurs when a repressor protein binds to DNA and prevents transcription from occurring. This is a form of inhibitory regulation, as opposed to positive control where an activator protein promotes transcription. The other answer choices do not accurately describe negative control.

In Gene Expression, When Does Negative Control Occur? When