Skip to main content
Tel: 0203 286 0822
Home > All Images > 2002 > October > 25 Oct 2002

Images Dated 25th October 2002

Choose from 14 pictures in our Images Dated 25th October 2002 collection for your Wall Art or Photo Gift. All professionally made for Quick Shipping.

Male technician examines DNA fingerprints Featured 25 Oct 2002 Image

Male technician examines DNA fingerprints

MODEL RELEASED. DNA fingerprinting. Male technician examines a DNA sequencing autoradiogram or "genetic fingerprint". A sample of DNA can be taken from body tissue such as hair, blood and saliva. The sample is then segmented with enzymes and a process known as electrophoresis orders the segments by size. The segments are then exposed on X-ray film where they form bands of black bars. Each band represents the position of the four DNA bases which forms the unique genetic code. The banding is unique to each individual and it is this that is known as the "fingerprint". It can be used to prove people are related and can help identify criminals