There is a mutation in the repressor that results in a molecule known as a super-repressor because it represses the lac operon permanently. Which of these would characterize such a mutant?
A) It cannot bind to the operator.
B) It cannot make a functional repressor.
C) It cannot bind to the inducer.
D) It makes molecules that bind to one another.
E) It makes a repressor that binds CAP.

Question

Quizplus · Accepted Answer

A super-repressor mutation typically results in a repressor that cannot bind to the inducer (such as allolactose in the lac operon), thus remaining permanently bound to the operator and repressing the operon continuously.

There Is a Mutation in the Repressor That Results in a Molecule