Which of the following best describes the functioning of the lac repressor protein?
A) in the presence of allolactose, the protein binds the operator inhibiting transcription
B) in the presence of allolactose, the protein binds the operator enhancing transcription
C) in the absence of allolactose, the protein binds the operator inhibiting transcription
D) in the absence of allolactose, the protein binds the operator enhancing transcription
E) none of the above
Correct Answer:
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