The birth of fingerprinting and the criminal case it was 1st used for PART 1 I can't upload it in the english section sorry. A fingerprint commonly refers to the impression left by the friction ridges of a human finger. The recovery of fingerprints from a crime scene is an important method of forensic science and DNA profilng.Since it was invented, fingerprinting was used to unvail mysterious murders and find their culprits. On June 7th, the newspaper “the guardian” published an article remembering the first criminal case solved by means of fingerprinting, which was invented by accident in Leichster by the genitisist Alec Jeffreys exactly 30 years ago. Dawn Ashworth was 15th years old when, on the walk home from a friend’s house living in a neighbour village, she was attacked and killed. The pathologist assessed that she put up considerable struggle before being raped and strangled. Right after Dawn’s body was found the police was quick to associate her case to another murder that had accurred a couple of years earlier: Lynda Mann’s circumstances of death were replicas of the 15th years old’s. The technique known as DNA fingerprinting was employed in a criminal investigation for the first time. Jeffrey discovered it stumbling on a failed experiment: he had DNA extracted from cells for the purpose of studying hereditary illnesses. In the process he had left the DNA attached to a photographic film that was left on a photografic developing container. Jeffrey discovered the extracted film showed different sequences of bars for each cell- with every cell belonging to a different patient- that was used. The technique was able to determine kinship and presumably whose DNA blood and other samples found on a crime scene beloged to. Indeed, The method was able to set free the major suspect for Dawn and Lynda’s deaths. The 17 years old J. Buckland, a boy with learning diffculties who had confessed Dawn’s but not Lynda’s murder, had actually killed none. The hunt for the 2 girls’ murderer resumed stronger than ever and months later reulted in inviting all the men who lived or had lived and worked in the area between 1984 and 1986 to get tested by means of fingerprinting. Over 5000 blood samples were analysed but surprisingly no one matched the DNA of the blood or sperm found on the victim. That was until one man’s confession in a pub turned the tables. to be continued in PART 2 bibliography: https://www.theguardian.com/uk-news/2016/jun/07/killer-dna-evidence-genetic-profiling-criminal-investigation