In the lac operon RNA polymerase first binds to the:
A)promoter
B)operator
C)repressor
D)regulator

Question

Quizplus · Accepted Answer

RNA polymerase first binds to the promoter, which is the specific DNA sequence located upstream of the structural genes in the lac operon. This binding initiates transcription of the structural genes. The operator is a DNA sequence that can regulate gene expression by binding to the repressor protein. The regulator gene codes for the repressor protein, which can bind to the operator to block transcription of the structural genes.

In the Lac Operon RNA Polymerase First Binds to The