Which of the following is a constituent of the lac operon promoter?
1)RNA polymerase binding site
2)CAP binding site
3)lac I gene
A) 1
B) 2
C) 3
D) 1 and 2
E) 2 and 3

Question

Quizplus · Accepted Answer

The lac operon promoter contains both the RNA polymerase binding site and the CAP binding site, but it does not contain the lac I gene (which is a repressor gene located elsewhere in the lac operon). Therefore, the correct answer is choice D, which includes both 1 and 2.

Which of the Following Is a Constituent of the Lac