What Would Be the Result of a Mutation That Deactivates

question 41

Multiple Choice

What would be the result of a mutation that deactivates the regulatory gene of a repressible operon in an Escherichia coli cell?

• A) continuous transcription of the structural gene controlled by that regulator
• B) complete inhibition of transcription of the structural 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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