Question

what types of enzymes are used to cut strands of dna into pieces before placing the dna in a gel for gel electrophoresis

Answer 1

For large DNA molecules, the DNA is cut into smaller pieces frequently through the use of restriction enzyme or DNA restriction endonuclease for gel electrophoresis. During gel electrophoresis, the DNA fragments are separated according to size and charge. It also involves inducing a current through a gel containing the molecules of interest.