Who performed studies on a couple of restriction enzymes of the E. coli bacterium ?
Answer & explanation
Correct answer: option 1
In 1966, Boyer took over assistant professorship at the University of
California at San Francisco. By 1969, he performed studies on a couple
of restriction enzymes of the E. coli bacterium with especially useful
properties. Boyer observed that these enzymes have the capability of
cutting DNA strands in a particular fashion, which left what has became
known as ‘sticky ends’ on the strands. These clipped ends made pasting
together pieces of DNA a precise exercise.