Answer:
Restriction endonucleases
Step-by-step explanation:
Restriction endonucleases are restriction enzymes that is used in cutting of deoxyrbonucliec acid (DNA)that recognizes a target sequence known as target site and then cuts the DNA into two pieces at or near that site.
Many restriction enzymes produce cut the ends with short, single strand, two of which if match can base pair and stick together. The enzyme DNA ligase helps in the joining of the molecule which seals gaps in the DNA backbone.