Read the statements regarding the lac operon and choose the correct option. 1. An inducer regulates the switching on and off of the lac operon. 2. The repressor protein dissociates from the operator region and prevents RNA polymerase from transcribing the operon. 3. In the presence of lactose, the repressor is activated by interaction with lactose. 4. RNA polymerase has access to the promoter and transcription proceeds only when the repressor is inactivated.

Question

Read the statements regarding the lac operon and choose the correct option. 1. An inducer regulates the switching on and off of the lac operon. 2. The repressor protein dissociates from the operator region and prevents RNA polymerase from transcribing the operon. 3. In the presence of lactose, the repressor is activated by interaction with lactose. 4. RNA polymerase has access to the promoter and transcription proceeds only when the repressor is inactivated. (A) 1 and 2 alone are correct (B) 2 alone is correct (C) 3 and 4 alone are correct (D) 1 and 3 alone are correct

Tardigrade Admin · Accepted Answer

Correct answer is (e) 1 and 4 alone are correct