Forensic science - An image of an open medical biology book at the page with DNA profiles and DNA fingerprint samples. Study of the use of restriction enzymes on genetic chromosomes of suspects to help find the criminal, using comparison of DNA fragments separated by gel chromatography. Tests are carried out in the laboratory room by scientists. DNA pattern formed on chromatograph is unique to each person, to a very high degree of accuracy. Analogous to genetic finger printing. Vertical color image.