The effect of both repressors and activators on a regulatory sequence allows for ________ of gene expression.
A) translation
B) combinatorial control
C) a biochemical pathway
D) primary structure

Question

Quizplus · Accepted Answer

Both repressors and activators are involved in combinatorial control of gene expression. This means that the specific combination of regulatory proteins (activators and repressors) and their binding to the regulatory sequence will determine whether or not the gene is expressed. This allows for fine-tuning of gene expression in response to different cellular signals and environmental cues. Repressors dampen or silence the expression of the gene by preventing RNA polymerase to attach to the promoter, while activators facilitate or the activation of the gene by binding to the promoter, assisting the binding of RNA polymerase or recruiting other transcription factors.

The Effect of Both Repressors and Activators on a Regulatory