Hey, Pedro, have you ever heard of a famously female named Amanda Knox who was convicted of, and then acquitted of, the same murder twice in 2007? Well, Ms. Knox spent four years in prison before being freed in 2011, for the murder of 21-year-old Meredith Kercher, Ms. Knox’s roommate. (Brayson, 2016) However, Ms. Knox’s case was re-tried in 2013 for the same murder because of biological evidence for DNA analysis. Ms. Knox and her then-boyfriend Raffaele Sollecito were tied to Kercher's murder were a kitchen knife, and a bra clasp was tested for DNA evidence. (Brayson, 2016) DNA is the most important pieces of evidence in a murder profile. “The phenomenon of transferring DNA via skin cells onto the surface of an object has come to be called
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The knife that was used during the murder contained Ms. Knox's DNA on the handle, and a small amount of murdered victim Kercher's DNA on the blade. (Brayson, 2016) The murder of Ms. Kercher took place in her bedroom whereas the bra clasp belonging to the victim found contained traces of Sollecito's DNA. Another individual involved Rudy Guede’s DNA was found throughout Ms. Kercher's bedroom and mixed with her blood in a bag from a vaginal swab taken from Ms. Kercher, and also Guede’s bloody handprints and fingerprints covered the bedroom where Ms. Kercher was murdered. (Brayson, 2016) The knife used was not examined alone in a sterile environment which resulted in contamination. The bra clasp wasn't tested until six weeks after the murder. Police procedure at the crime scene in the interim was allegedly not sterile, as there were reportedly people all over the crime scene without protective suits, and latex gloves were not changed as they should have …show more content…
(Saferstein, 2015) When the collection of evidence begins, biological evidence should be photographed close up and its location relative to the entire crime scene recorded through notes, sketches, and photographs. (Safterstein, 2015) If there are any shapes and positions of bloodstains which may provide information about the circumstances of the crime, an expert must immediately conduct an on-the-spot evaluation of the blood evidence. (Safterstein, 2015) “No attempt should be made to disturb the blood pattern before this phase of the investigation is completed” (Saferstein, 2015, p. 395). Dried blood is the best removed from a surface with a sterile cotton-tipped swab lightly moistened with distilled water from a dropper bottle known as a substrate control. “The biological evidence should not be packaged in plastic or airtight containers because an accumulation of residual moisture could contribute to the growth of DNA-destroying bacteria and fungi” (Safterstein, 2015, p. 396). The evidence collector is required to handle all body fluids and biologically stained evidence with fewer personal contact. The body fluids collected must be treated as infectious; hence, wearing disposable latex gloves while handling the evidence is required; however, this reduces
The knife that was used during the murder contained Ms. Knox's DNA on the handle, and a small amount of murdered victim Kercher's DNA on the blade. (Brayson, 2016) The murder of Ms. Kercher took place in her bedroom whereas the bra clasp belonging to the victim found contained traces of Sollecito's DNA. Another individual involved Rudy Guede’s DNA was found throughout Ms. Kercher's bedroom and mixed with her blood in a bag from a vaginal swab taken from Ms. Kercher, and also Guede’s bloody handprints and fingerprints covered the bedroom where Ms. Kercher was murdered. (Brayson, 2016) The knife used was not examined alone in a sterile environment which resulted in contamination. The bra clasp wasn't tested until six weeks after the murder. Police procedure at the crime scene in the interim was allegedly not sterile, as there were reportedly people all over the crime scene without protective suits, and latex gloves were not changed as they should have …show more content…
(Saferstein, 2015) When the collection of evidence begins, biological evidence should be photographed close up and its location relative to the entire crime scene recorded through notes, sketches, and photographs. (Safterstein, 2015) If there are any shapes and positions of bloodstains which may provide information about the circumstances of the crime, an expert must immediately conduct an on-the-spot evaluation of the blood evidence. (Safterstein, 2015) “No attempt should be made to disturb the blood pattern before this phase of the investigation is completed” (Saferstein, 2015, p. 395). Dried blood is the best removed from a surface with a sterile cotton-tipped swab lightly moistened with distilled water from a dropper bottle known as a substrate control. “The biological evidence should not be packaged in plastic or airtight containers because an accumulation of residual moisture could contribute to the growth of DNA-destroying bacteria and fungi” (Safterstein, 2015, p. 396). The evidence collector is required to handle all body fluids and biologically stained evidence with fewer personal contact. The body fluids collected must be treated as infectious; hence, wearing disposable latex gloves while handling the evidence is required; however, this reduces