What Would Be the Result of a Mutation That Deactivates

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