A Mutation in the Gene Encoding the Lactose Repressor (LacI)

question 76

Multiple Choice

A mutation in the gene encoding the lactose repressor (lacI) that prevents lactose from binding to the LacI protein would result in

• A) constant expression of the lac operon in the absence of lactose.
• B) constant repression of the lac operon in the absence of lactose.
• C) constant expression of the lac operon in the presence of lactose.
• D) constant repression of the lac operon in the presence of lactose.

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