Genetics: Analysis and Principles 5th Edition by Robert Brooker

تمرين 44

On its chromosome, an E. coli cell is iacl lacZ + lacY + lacA +. It has an F factor that is iaci + iacZ + iacY + iacA +. What is the expected level of expression of the lac operon genes ( lacZ + iacY + iacA + ) in the absence of lactose
A) Both lac operons would be expressed
B) Neither lac operon would be expressed
C) Only the chromosomal lac operon would be expressed
D) Only the lac operon on the F factor would be expressed.