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Dna fingerprinting research paper
Dna fingerprinting research paper
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More handpicked essays just for you.
Dna fingerprinting research paper
Dna fingerprinting research paper
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Timothy Bridges Victim: Timothy Bridges Suspect: Timothy Bridges How the hair fiber made a connection to the case? The hair analysis helped prove that Bridges was not the actual person who committed the crime. After 25 years of him being in prison they found him innocent because of hair evidence.
The Wayne Williams murder trial in 1981 still has some unanswered questions for some. But some of the key facts are as follows; Investigators found unique fibers on the clothes of multiple victims for a two year span. These fibers consisted of a yellow-green color and acetated fibers. The investigators set up surveillance after the serial killer started dumping bodies in the Chattahoochee River. One night the surveillance team heard a loud splash and followed a vehicle and identified the potential suspect as Wayne Williams.
(2) Cross Examination The defense can challenge Kendal Malone’s findings of the tire tracks behind Balmen’s house by showing how they only establish that Bratton’s vehicle was present at the scene at some point. They do not determine if the tracks were made at the time of the murder, and they only establish that the vehicle was at the scene, not Bratton. The defense should also ask why no footprints were found in the dirt. Finding footprints would confirm that someone actually got out of the car.
Laci’s family didn’t know he even owned a boat until this murder. It’s possible to say that he took her in the boat on the fishing trip and probably drown her out in the bay. There were no witnesses claiming that he was at the golf course but plenty state that he was seen on his boat trying to catch fish. Evidence is something that is found against the case that can bring a lead and help find out who was involved and who were witnesses to prove it. Catchy evidence would be how he announced his alibi.
They argued that all the evidence shown were only circumstantial. The only thing that could connect Scott to the murder of his wife and son was the DNA evidence that was found, was one of Laci’s hair on his boat. They believed that a cult had murdered Laci in some sort of ritual for sacrifice. The defense pointed out that there was no cause of death, no time of death, no murder weapon, no evidence as to how she was killed, no crime scene, no eyewitnesses, no confessions. The defense also pointed out that the defendant had an alibi.
FACTS: The defendant (Lake) encountered Clarke sitting on the beach and he demanded Clarke’s white car keys for several times. But, when Clarke refused, Lake pulled out a gun and walked Clarke out to the water. At that time, Clarke saw his friend (Croaker) and he called out to warn her. Thereafter, Lake saw her and demanded her car’s keys. When she refused, he held the gun to Croaker’s head and she gave him the keys.
Many techniques in labs at the time were poorly used, which was why Blair was wrongfully prosecuted for the crime law enforcement thought he had commit. Therefore, labs were held responsible for the false tests that led to suspects being imprisoned (Scheck). New technology, along with improved techniques has made it possible to get those falsely imprisoned, exonerated and to find the real suspects. Conventional hair analysis, where only one strand is compared to another is now considered as junk evidence (Scheck). Instead, a new technique where mitochondrial DNA is extracted directly from hair shafts is more accurate.
Hair and Fiber Cases Name of the Case : 30 Years in jail for one piece of hair Victim : A 78 year old woman who was raped and murdered Suspects : In This murder case, the main suspect was a guy by the name of George Perrot. How hair played a part in the murder case : At the age of 17 Perrot was put on trial for the murder of a 78 year old lady who was found raped in her bed and murdered. At the crime scene there was no semen, Blood or DNA. All that was found was a piece of Perrot’s hair.
Since there was no root of the hair the tissue DNA of the hair could not get a precise identification. Mitochondrial DNA was instead used to narrow down the identity. It could not give a precise identification, but it did narrow it down to be a female in the Anthony family. The hair showed characteristics of decomposition on it (“Forensic Analysis of the Casey Anthony Trial”). They also did an odor analysis in the trunk of Casey’s vehicle.
This was heavily backed by the police department and nobody seemed to question the truth and sincerity of his statements. After demonstrating to the court exactly how Scott had attacked him, a new piece of evidence was bestowed upon the judge and jury. This piece of evidence proved to be the most crucial, as it had finally shone some light on a case that would have been falsely ruled. This evidence was a video that was taken by a passerby. The footage showed Scott as he attempts to make a getaway before Slager took aim and fired multiple rounds into Scott as his back was turned.
So why would they point it towards Aaron if they could not pull DNA from the gum? That would be because he seemed like a good fall back guy. The lawyers tried to also blame two other good friends to Aaron, Ernest Wallace and Carlos Ortiz. Once they got them in to talk the police used peer pressure to get these two, to say what the police wanted to hear when it was not even true.
Every day forensic investigators use tactics just like the ones that were discussed throughout the paper. It’s more than just looking for an admission of guilt, and interrogating potential suspects until they
Straight hair has a flat appearance wild curly hair is more round or oval. The collection of hair at a crime scene can play a major role in to determining the who is suspect is by race or nationality. Hair can be collected by using ultraviolet lights. And place in a secure
This shows that there was DNA evidence at the crime scene but Adnan and Jay had cleaned it up. Even though there is little DNA evidence to convict Adnan of the crime, there are still several key pieces of the crime that lead prosecutors to Adnan
DNA in forensic science The majority of cells making up the human body are diploid cells carrying identical DNA, with the exception of haploid gametes and red blood cells. Several types of biological evidence such as blood and hair are commonly used in forensic science, which is the scientific study of evidence for crime scene investigations and other legal matters. Forensic science is used for the purpose of DNA analysis, this is the analysis of DNA samples to determine if it came from a particular individual. DNA analysis is done by obtaining DNA samples from an individual; next, a large sample of DNA is produced from amplified selected sequences from the DNA collected.