A Mutation That Inactivates the Regulatory Gene of a Repressible

question 63

Multiple Choice

A mutation that inactivates the regulatory gene of a repressible operon in an E. coli cell would result in

• A)continuous transcription of the gene controlled by that regulator.
• B)complete inhibition of transcription of the gene controlled by that regulator.
• C)irreversible binding of the repressor to the operator.
• D)inactivation of RNA polymerase by alteration of its active site.
• E)continuous translation of the mRNA because of alteration of its structure.

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