Answer:
restriction enzymes are enzymatic proteins which cleave DNA at specific sites. these proteins are contained inside the bacteria to cleave the foreign DNA particles from Bacteriophages. these enzymes can be isolated from the bacteria and can be used in vitro for DNA manipulation.
Step-by-step explanation:
restriction enzymes cut DNA creating smaller segments.
Also name restriction endonucleases
examples:
HIND3, BAMH1, ECOR1, etc