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

Question

Quizplus · Accepted Answer

In a repressible operon, the regulator gene codes for a repressor protein that binds to the operator region and inhibits transcription. If the regulator gene is mutated and inactivated, the repressor protein cannot be made, and the operator region will remain unoccupied. This will result in continuous transcription of the gene controlled by that regulator.

A Mutation That Inactivates the Regulatory Gene of a Repressible