When a structural gene is under positive inducible control, what would be the result of a mutation that eliminates the activator protein?
A. The transcription of the structural gene will not be affected, as an activator is not required.
B. Since transcription will require an activator protein, the transcription will be turned off.
C. The mutation will lead to activation of a repressor upon the lack of an activator protein, which will block transcription.
D. More cAMP will be produced in a cell to compensate for the lack of an activator protein.
E. The structural gene will be constitutively expressed due to the lack of inducible control.
Ans: B. Since transcription will require an activator protein, the transcription will be turned off.
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