The first scientist purified the DNA-cutting enzyme, EcoRI, while the second scientist was the first to isolate plasmids and show that plasmids are responsible for transforming naturally antibiotic sensitive bacteria into antibiotic resistant forms.
a.Paul Berg: Stanley Cohen
b.Herb Boyer: Stanley Cohen
c.Arthur Kornberg: Herb Boyer
d.Stanley Cohen: Herb Boyer
e.Kary Mullis: Stanley Cohen