Which of the Following Proteins Binds to the Operator in the Operon

Question

Which of the following proteins binds to the operator in the operon model?
A) DNA polymerase
B) RNA polymerase
C) a regulatory protein
D) lactose

Accepted Answer

In the operon model, a regulatory protein binds to the operator to either activate or repress transcription of the genes in the operon. This is a key mechanism in prokaryotic gene regulation.