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Colin Pitchfork (born .1961, Bristol) was the first criminal caught based on DNA fingerprinting evidence. Pitchfork raped and murdered two girls in Narborough, Leicestershire on 21st November 1983 and on 31st July 1986. He was arrested on 19th September 1987, confessed, and was sentenced in 1988. This work is copyrighted. ...
This work is copyrighted. ...
1961 (MCMLXI) was a common year starting on Sunday (the link is to a full 1961 calendar). ...
Bristol (IPA: ) is a city, unitary authority and ceremonial county in South West England, 115 miles (185 km) west of London and between the cities of Bath, Gloucester and the borough of Swindon. ...
Genetic fingerprinting or DNA testing is a technique to distinguish between individuals of the same species using only samples of their DNA. Its invention by Sir Alec Jeffreys at the University of Leicester was announced in 1985. ...
The crimes
On November 21, 1983, 15-year-old Lynda Mann left her home to visit a friend's house. She failed to return. The next morning, Lynda was found raped and strangled on a deserted footpath known locally as the Black Pad. Using forensic science techniques available at the time, a semen sample taken from her body was found to belong to a person with type A blood and an enzyme profile that matched only 10 per cent of males. With no other leads or evidence, the case was left open. Forensics or forensic science is the application of science to questions which are of interest to the legal system. ...
Horse semen being collected for breeding purposes. ...
Blood type is determined, in part, by the ABO blood group antigens present on red blood cells A total of 29 human blood group systems are recognized by the International Society of Blood Transfusion (ISBT). ...
For the history and usage of the word man, see man (word) A man is a male human. ...
Evidence has several meanings as indicated below. ...
On July 31, 1986, another 15-year-old girl, Dawn Ashworth, took a shortcut instead of taking the normal route home. Two days later, her body was found in a wooded area near a footpath called Ten Pound Lane. Like Lynda Mann, Ashworth had also been raped and strangled. The modus operandi matched that of the first attack, and semen samples revealed the same blood type. Modus operandi (often used in the abbreviated form MO) is a Latin phrase, approximately translated as mode of operation. ...
Blood type is determined, in part, by the ABO blood group antigens present on red blood cells A total of 29 human blood group systems are recognized by the International Society of Blood Transfusion (ISBT). ...
The prime suspect was a local 17-year- old boy, Richard Buckland, who revealed knowledge of Ashworth's body, and admitted the crime under questioning, but denied the first murder. Alec Jeffreys, of the University of Leicester, had recently developed DNA profiling along with Peter Gill and Dave Werrett of the Forensic Science Service (FSS) and detailed the technique in a 1985 paper. Professor Sir Alec John Jeffreys, FRS, (born in 9 January 1950 at Luton in Bedfordshire) is a British geneticist, who developed techniques for DNA fingerprinting and DNA profiling. ...
Genetic fingerprinting or DNA testing is a technique to distinguish between individuals of the same species using only samples of their DNA. Its invention by Sir Alec Jeffreys at the University of Leicester was announced in 1985. ...
The Forensic Science Service (FSS) is an Government Owned Company in the United Kingdom, which provides forensic science services to the police forces and government agencies of England and Wales. ...
1985 (MCMLXXXV) was a common year starting on Tuesday of the Gregorian calendar. ...
Gill commented:
- I was responsible for developing all of the DNA extraction techniques and demonstrating that it was possible after all to obtain DNA profiles from old stains. The biggest achievement was developing the preferential extraction method to separate sperm from vaginal cells – without this method it would have been difficult to use DNA in rape cases
Using this technique Dr Jeffreys compared semen samples from both murders against a blood sample from Buckland which conclusively proved that both girls were killed by the same man, but not the suspect. The police then contacted the FSS to verify Dr Jeffrey’s results and decide which direction to take the investigation. Buckland became the first person to be exonerated by DNA fingerprinting. The vagina, (from Latin, literally sheath or scabbard ) is the tubular tract leading from the uterus to the exterior of the body in female placental mammals and marsupials, or to the cloaca in female birds, monotremes, and some reptiles. ...
Jeffreys later said:
- I have no doubt whatsoever that he would have been found guilty had it not been for DNA evidence. That was a remarkable occurrence.'
Leicestershire police and the FSS then undertook a project where 5,000 local men were asked to volunteer blood or saliva samples. This took six months, and no matches were found. Look up Month in Wiktionary, the free dictionary. ...
Later however, a colleague of a man, Ian Kelly, heard Kelly bragging that he had given a sample whilst masquerading as his friend, Colin Pitchfork. Pitchfork, a local baker, was arrested at his house in neighbouring village called Littlethorpe and a sample was found to match that of the killer. As of 2005, he was still in prison. Since then, DNA fingerprinting has been used to secure many other convictions. A loaf of bread A baker is someone who primarily bakes and sells bread. ...
References Joseph Aloysius Wambaugh, Jr. ...
1989 (MCMLXXXIX) was a common year starting on Sunday of the Gregorian calendar. ...
External links - http://www.bbc.co.uk/crime/caseclosed/colinpitchfork.shtml
- http://www.forensic.gov.uk/forensic_t/inside/news/list_casefiles.php?case=1
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