A mutation in the CAP protein occurs such that it permanently binds cAMP.What is the likely effect on lac operon gene expression when glucose concentration is high and lactose is present?
A)Lac operon gene expression will decrease until glucose concentrations drop.
B)Lac operon gene expression will increase until glucose concentrations drop.
C)Lac operon gene expression will permanently glucose,regardless of lactose concentration.
D)Lac operon gene expression will permanently increase,regardless of glucose concentration.

Question

Quizplus · Accepted Answer

When the CAP protein is mutated to permanently bind cAMP, it will continuously activate the lac operon, leading to increased expression of the lac operon genes regardless of glucose concentration. Normally, CAP binding is regulated by cAMP levels, which are inversely related to glucose levels.

A Mutation in the CAP Protein Occurs Such That It