DNA Evidence Research

Each cell in the body consists of the blueprint stored in the nucleus. There are over 23000 genes in the body which are bundled by a chemical substance known as DNA. The DNA has 46 chromosomes of which half of them are inherited from parents. There are certain portions of DNA which are similar to each. An individual DNA profile is done by investing in specific regions. This was first used when Lynda Mann, a 15-year-old girl, began a journey from her home to visit a friend, never to return. The next day, her body was found raped and strangled on a quiet footpath (Elvidge, 2016). There was little evidence found in this place, and therefore semen from the vagina was extracted from the dead body.

Forensic investigation showed that the type of semen is only found in 10% of men, and the person who committed this crime had a type A blood. The police could not locate the suspect, and therefore the evidence was ineffective. The main purpose was to compare their DNA testing with the suspect’s DNA profile. After six months, no sample could be matched with that of the suspect. However, Ian Kelly, a local man was overhead in a club bragged of giving 200 Euros to donate a DNA sample of one person, identified as Colin Pitchfork. Since the guy was living far from this area, Kelly promised to help him without further concerns. Another worker in this bar raised concerns and Kelly was arrested and detained.

The court gave him a 30 years life imprisonment following the home secretary. Jeffrey’s work helped Buckland from suffering a miscarriage of justice (Bodmer, 1994). The investigative technique was widely accepted and embraced by authorities all over the world. The Home office to ensure there are enough forensic experts and scientists. They were trained to allow DNA profiling being incorporated in the police investigations. An appeal was made to the Colorado Supreme Courts based on the manner in which Masters was prosecuted. During the trial, there were controversial opinions given by the forensic expert who examined Master drawings and suggested that they reflected personality trait. The most shocking was that Masters was prosecuted without any physical evidence against him. Peggy Hettrick, a 12 years old girl was murdered and her private parts mutilated.

This incident occurred near Master’s home where he lived together with his father. The cyclist who also saw the body reported the same way as Masters had done (Yager, Smith, & Goldbaum, 2008). With all these accusations, the police never found any blood stains or physical evidence on Masters House which could be linked with the homicide. Additionally, all the knives and drawing materials were examined but never recovered any physical evidence. During the trials, Masters’ father denied his son of being involved in any criminal offense. Meloy, the Forensic expert, argued that he had never seen many drawings like that linked to the homicide suspect. By killing the girl, the girl could never abandon or stimulate a man (Banda, 2008). All these could represent what was passing in Master’s thoughts, and the urge to kill Hettrick.

The girl was a victim of circumstance, and to Masters, she described all the women. His actions constituted the grief of her mother or a woman. Meloy indicated that Master’s trigger mechanism was what transpired him to kill. He was obsessed with female genitalia and had a wide range of pornography materials. Hammond’s home was 100 yards from the scene of the murder and committed this act two days before the act. In 2008, prosecutors indicated that there was evidence held by the Master’s lawyers. Prosecutors announced that new DNA tests be done to different suspects and that Masters should be released. Masters charges were dismissed and released on Jan 22, 2008. The other event occurred when the Supreme Court of Colorado upheld the witness given by the forensic expert instead of relying on the evidence by Daubert.

Forensic analysis has importance because Timothy was excluded as suspect due to DNA evidence obtained from the victim’s clothes which led to the release of Tim Masters. It also evident that forensic physiology uses precarious aspects which can convince the jury of coming to drawings. On the other hand, law enforcement relies on forensic psychologists to help them in the investigation. The case of Tim Masters was post-traumatic stress. Jayne was left behind to stay with William’s friend, a roommate and a waitress. The woman was attractive to male customers in the restaurant, and one of his admirers Robert Gene Pilcher kept making advances to her for a date. He also kept asking Jayne for a date, but many did not notice.

Jayne did have a boyfriend, whom he had bought an engagement ring. Later, the girl was found killed near a house belonging to Max Marlin and a cousin to Robert. princegeorgecitizen. com/20080406125908/wire/world- News/did-a-psychological-profile-go-too-far-experts-question-if-practice-is-reliable. html Bovsun, M. , (2014) DNA evidence helps close case 40 years after teenage girl was raped, beaten, Shot and killed in rural Iowa. Retrieved from http://www. The Book of Man: The Human Genome and Our Quest to Discover our Genetic Heritage. Oxford: Oxford University Press. Freeman, S. , (2008) "How DNA Profiling Works" 19 August 2008. HowStuffWorks. , (2014) Pilcher guilty of 1974 murder. Retrieved from http://www. ottumwacourier. com/news/local_news/pilcher-guilty-of- Murder/article_36d76c80-3dd7-11e4-990b-0fcb841090c7. html Possley, M. CBS News. R e t r i e v e d f r o m h t t p : / / w w w.