13.
A:
Restriction enzymes cut DNA at specific locations, producing ends that can be ligated How are restriction enzymes and ligases used in biotechnology? back together with ligase
B:
Only restriction enzymes that produce blunt ends after cutting DNA can be ligated with ligase
C:
Only restriction enzymes that produce sticky ends on the DNA can be ligated with ligase
D:
Restriction enzymes randomly cut DNA, and the cut fragments can be ligated back together with ligase
The answer is: A