Endonuclease: An enzyme that cuts DNA strands internally at specific sites, just like how restriction enzymes work.
Recognition Sequence: This is the specific sequence of nucleotides where a restriction enzyme will cut. It's like the dotted line on your craft paper telling you where to cut.
DNA Ligase: This is another type of enzyme that acts as glue, joining together two pieces of DNA after they've been cut by restriction enzymes.