When a Structural Gene Is Under Positive Inducible Control, What

Multiple Choice

When a structural gene is under positive inducible control, what would be the result of a mutation that eliminates the activator protein?

A) The structural gene would to be constitutively expressed due to the lack of inducible control.
B) The transcription of a structural gene will not be affected, as an activator is not required.
C) The mutation will lead to activation of a repressor upon the lack of an activator protein, which will block transcription.
D) As the transcription will require an activator protein, the transcription will be turned off.
E) More cAMP will be produced in a cell to compensate for the lack of an activator protein.