Which of the following regions of E. coli cloning vector pBR322, has information for the formation of proteins?
A. ampR
B. tetR
C. EcoR I
D. rop
ampR has information for the formation of proteins that can resist the antibiotic ampicillin. tetR has information for the formation of protein that can resist the antibiotic tetracyclin. rop has information for the formation of proteins involved in replication of pBR322.