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Criminal investigations,forensics and evidence
Criminal investigations,forensics and evidence
Criminal investigations,forensics and evidence
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The Homicide unit assisted both the investigators and the Forensic Identification unit to gather enough evidence to determine what happened at the crime scene (Huff Post News, 2013). The Forensic identification unit assisted the investigators in determining if the remains that were found in the incinerator, was in fact of Tim Bosma. The forensic scientists evaluated a tooth that they had found, to see if they could gather enough DNA from it to positively identify the human (Adam Carter,
In this unfortunate case Molly Wright, who was 73 years old, was killed by a man named David Hill. He stated he found Wright in her home dead and he was trying to help her before he called 999 (England’s version of 911). Unfortunately according to Samantha Warna, who is a Bloodstain Pattern Expert, tells a different story of events for that night. (Money the Motive in Molly Murder Claims Prosecution, 2008) Mr. Hill was in debt for about twenty thousand dollars. His business partner was Mrs. Wright.
A second forensic anthropologist examined the fragments and came to the conclusion that the corpse had been mutilated. Sherry L. Culhane, a DNA analyst with the Wisconsin Department of Justice, tested blood samples found in various locations inside Teresa Halbach’s car, including the driver’s seat, ignition area, front passenger seat, and rear passenger door entrance. Culhane found that the samples matched Steven Avery’s DNA profile. DNA material taken from the Toyota key found in Avery’s bedroom also matched his profile. DNA testing was performed on blood samples taken from the rear cargo area of the Toyota and from an empty can of Wild Cherry Pepsi found on the front console.
To start off with is the DNA samples, on the nightshirt which was saliva. They couldn’t analyze the DNA at that time because the technology didn’t exist. To expand on it there was DNA on the nightshirt but they couldn’t analyze with the technology back then. Next piece of evidence are the bite marks. Furthermore the bite marks on Sabina were analyzed by two different analyst.
Madison Corey FSC-224-202 17 April 2023 Case Study #3 - The Atlanta Child Killer, Wayne Williams Fiber and hair evidence are often compared and examined during testing. It can link individuals, locations, and items. When trying to connect a suspect to a victim or a crime scene, trace evidence such as hairs and fibers may be very useful. The presence of hairs can link a suspect to a victim or a suspect/victim to a crime scene due to hairs being transmitted via physical contact. Wayne Williams was able to be found guilty of several murders with these pieces of evidence.
Even though they were roommates, speculation of “contamination” does not prove the innocence of the suspect. Obviously, clear DNA evidence existed linking each suspect to the crime scene along with its significance in the
A look at the evidence of the murder case proves
The trial against Robert Blake was accused of murdering his wife is also an example of the C.S.I. effect. The prosecution had very strong evidence that connected Robert Blake to the murder of his wife. However, the jury wanted “hard” evidence. Since there was no trace of gun-shot residue or blood on Blake’s clothing, the jury acquitted him of all charges.
These injuries are paired with signs of a fight. An organic substance was found under the decedent's fingernails, while the defendant had on bandaids during the questioning. I feel as though a DNA test on the organic substance versus Mr Miller’s DNA would be a crucial piece of evidence for this case. Mr Miller additionally stated that his wife was a heavy drinker. The defendant said this was why his wife had fallen, yet when Mrs Miller was examined, the coroner’s report stated that the victim had a 0 Blood Alcohol Content, or
There was multiply evidence that, traced back to O.J. Simpson. His blood was recovered and fingerprints were local on the back fence. Later they found his hair in a knit hat at the crime scene, which the same kind of fiber was found on Goldman’s clothing. Fibers from simpson’s car were also similar to the knit hat. In his vehicle, he had blood from both victims and a pair of bloody socks in his house, along with the right glove that was missing from the crime scene.
Although, in our lab report, suspect ones DNA matched the crime scene when cut with enzyme one, this can be explained by how closely related the two suspects are. Therefore two enzymes were used to cut the DNA; the suspect has to match both. Moreover, the limitation to DNA fingerprinting is, if a person were to have an identical twin. This is because identical twins have the same DNA because they come from the same egg. If a suspect’s DNA matched that of the one being tested, and they had an identical twin, a farther investigation would need to be done.
In a murder case where an 18-year-old, Sarah Johnson was sentenced to life in prison for committing a first degree murder for both her and dad. The case reopened when a retired crime lab technician Michael Howard “testified that whoever shot Diane and Alan Johnson at close range on September 2, 2003, would have been hit by a "rain" of blood spatter” (http://www.cnn.com/2005/LAW/03/03/johnson/index.html?eref=sitesearch). Howard came up with his theories proving that, Sarah was not even close in committing those murders and it is a wrongful conviction. Based on blood spatter, Howard disclosed that the shooting which took place was at a very close range and blood would have been all over the assailant, where as there was no blood pattern found on Sarah’s clothes. In fact, the pajama pant, Sarah was wearing on the day of shooting had no trace of her parent’s DNA or blood.
You may wonder why some old letters or even new letters make absolutely no sense or don’t even spell words. The secret to reading them was a code key. Code breaking, the art of deciphering codes and letters, has been used for a long time. In fact, it has been traced back to the Navajo code talkers in the United States Marines in WWII. In this report I will break down different aspects of the art of code breaking.
This DNA sample was tested to determine if the DNA left on Mary Sullivan was a match. This proved to not be a match. This shows some suspicion to the final verdict of the
DNA testing was a major milestone for the judicial system and the investigators. DNA testing involves a sample collection from the crime scene and compared to the defendant in question. If any type of similarities is present, then the defendant would be arrested and questioned. The milestone happened in the late 1980s when the federal government took charge of establishing a combined DNA index system that covered both the local and the state systems in the profiling of criminals (Lazer, 2004). The first use of DNA testing was in 1986 for a rape murder conviction.
