Which of the Following Is/are NOT Part of the Lac

Question

Which of the following is/are NOT part of the lac operon?
A)lacZ
B)lacI
C)lacY
D)lacA
E)All (lacZ,lacI,lacY,and lacA)are part of the lac operon.

Accepted Answer

lacI is not part of the lac operon. It is a separate gene that produces a repressor protein that binds to the operator region of the lac operon, controlling its transcription.