TaqI's restriction site is:TCGAAGCT
There are many restriction enzymes found in biological system. Few of them are EcoRI, BamHI, HindIII etc.
Restriction enzymes are used in lab for cutting DNA sequences at specific sites.The RE used will cut only at its recognized site. expose the base sequence of a DNA fragment. they are enzymes isolated...
to cut out pieces of DNA
Short Answer = Scientific Research.