Why glucose and galactose cannot act as an inducer for lac operon?

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Because they can bind with the repressor

Because they can bind with the regulator

Because they can bind with the operator

Because they cannot bind with the repressor

answer is A.

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Detailed Solution

An inducer binds with the repressor protein and prevents the repressor protein from binding to the operator. Glucose and galactose cannot act as an inducer because these do not have the binding sites for attaching the repressor protein.

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