DNA polymerase enzyme was discovered by Kornberg in 1957 in $E.\ coli$. There are three polymerases present in $E.\ coli$ namely, polymerase-I, polymerase-II, polymerase-III.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.