There Is a Mutation in the Operator of the Lac

question 21

Multiple Choice

There is a mutation in the operator of the lac operon in a cell such that the lac repressor always stays bound to the operator. If lactose is added to the cell, what will happen?

• A) Lactose will bind to the repressor, and lac enzymes will be produced.
• B) Lactose will bind to the repressor, and lac enzymes will not be produced.
• C) Lactose will not bind to the repressor, and lac enzymes will be produced.
• D) Lactose will bind to the operator, and lac enzymes will be produced.

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Definitions:

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