Deletion of which of the following would result in consituti

Deletion of which of the following would result in consitutive expression of the lactose operon?

a) either lacI or lacO

b) either lacZ, lacI, or lacO

c) lacZ only

d) lacO only

I know if lacO is deleted, it will be constitutive, but i\'m not sure about if lacI was deleted.

Solution

The correct option is....................a) either lacI or lacO