If the lac repressor were altered so it could not release lactose once lactose was bound to it then you would predict that:

A. The repressor could not bind to DNA.

B. The repressor would always be bound to DNA.

C. The repressor could bind to DNA only when cells were grown with glucose.

D. The repressor could bind to DNA only when cells were grown without glucose.

If the lac repressor were altered so it could not release lactose once lactose was bound to it then you would predict that " the repressor could not bind to DNA".

Option: A

Explanation:

A DNA-binding proteins prevent gene expression coding for proteins engaged in bacterial lactose metabolism is understood as the lac repressor.

Such genes are repressed if lactose is not accessible to the cell, meaning that when lactose is available, the bacterium only spends energy in the development of machinery required for the absorption and processing of lactose.

When lactose is accessible, it is transformed into allolactose, which prevents the DNA binding ability of the lac repressor and thus increases the gene expression.

gold i'm pretty sure i might be wrong