British Scientist Sir Alec Jeffreys discovered DNA Fingerprinting in 1984. He used human muscle tissue to extract DNA and analyze it in his laboratory. During this process, he identified different DNA patterns in 3 people’s genetic material – a mother, a father and one of his technicians. Jeffreys found a way to process DNA markers so that they formed human bar code on Xray film. This was called DNA fingerprinting. His innovative DNA fingerprinting method was used to crack the 1983 murder of a 15 year old in England. The first case solved using DNA testing.