A) Glucose acts as inducer for/ac operon.
B) Galactose acts as inducer for lac operon.
C) Glucose or galactose act as inducers for lac operon.
D) Glucose or galactose cannot act as inducer for lac operon.
Correct Answer: D
Solution :
Inducer is a molecule that regulates gene expression. The inducer in the lac operon is allolactose or lactose. In the presence of an inducer, the repressor is inactivated by interaction with the inducer. This allows RNA polymerase access to the promoter and transcription proceeds.
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