Hair Evidence Research Paper

In the case of Joann Curley the key physical evidence that was used to solve this case was hair evidence. Hair evidence when properly collected and submitted to the laboratory accompanied by an adequate number of standard/reference samples, can provide strong corroborative evidence for placing an individual at a crime scene. In the case of Joann Curley, evidence was searched for and collected from their house, Roberts’s autopsies, and Roberts’s workplace. In addition, they also tested Roberts’s co-workers for thallium after they were questioned, including Joann and their daughter. During the investigation they figured out thallium was present in Roberts’s workplace which led to believe that his co-workers may have had involvement and pulled a prank on him, as Robert was known to have pranks pulled on him. This theory went down the drain after investigators tested the air and surface of Roberts’s workplace, which ended up being eliminated as possible source for exposure to thallium. Investigators then decided to look closer to home and found thallium located in Roberts thermos cup that he never took to work and decide to have a second autopsy of his body. During the autopsy forensic toxicologists Michael Baden and Fredrick Reader’s used hair evidence collected during it to analyze for traces of thallium because a substance like thallium will circulate through the blood stream and attach to the root of the hair like a cell, it then stays on the hair shaft and grows

If each person’s hair has different color and width examined on a microscope then the match found between the suspect;s hair and crime scene hair must be the same person because each person’s hair has different set of characteristics.This hypothesis had been accepted, after comparing each suspect hair with each other. Although some had come close to being similar to each other like Suspect A’s hair sample color and Suspect C’s hair sample color, Suspect A’s hair had a light shade of brown while Suspect C’s hair had a light shade of grey. Even when a person’s hair bears many resemblances to another, there will always be something different about them. This makes each hair unique so the match between two samples must be the same

Forensic evidence plays a huge role in most criminal cases. After the Daubert trial, forensic scientific evidence was reevaluated in criminal and civil cases. Scientific and forensic types of evidence can be extremely helpful in proving the case. It can help identify the suspect in a criminal case. That will help put a criminal in prison. There are many different types of forensic evidence that can be considered as scientific evidence. The different types include DNA matching, fingerprint identification, and hair evidence. The methods used to show these types of evidence are usually beyond the scope of knowledge that judges and juries know. Those types of forensic evidence are usually introduced as scientific evidence. Scientific evidence can sometimes be omitted from a courtroom or

Hair is a beautiful part of human biology. Did you know that the human scalp has at least 100,000 hair follicles? The hair grows in an even rate by about half an inch per month or six inches each year. The hair grows from the root or bottom of the follicle, while the blood vessels nourish the root. Oil glands provide the necessary chemicals to keep the hair shiny and soft. Every food or medication you have taken recently may be reflected on your hair, the reason why chemical analysis of the human hair is used as a diagnostic tool.

Hair connection to the case: The killers dog hair was found with her body,which connects the murder to the owners.

In addition, more attention is paid to the front hairline (often thought to be the most important part of a hair system).

How hair played a role: anagnos was stabbed twenty times and was hut in the head multiple times. Then they found hair that anagnos clenched in his hand that came from the suspect. The hair was sent to a private lab for testing, and figured

Trichology is the study of hair. Interestingly, this study dates back to mid-1800s. However, hair analysis in forensic science began in 1930. During which time, a forensic scientist by the name of Edmond Locard introduced the Locard Exchange Principal. This principal hinges on the fact that any time there is contact between two surfaces an exchange of material will take place. (Oien, 2009) In this paper, I will prove how Forensic Hair Analysis and Forensic Hair comparison and studies if properly performed and correctly interpreted hair analysis meets all the scientific method standards.

DNA is generally used to solve crimes. In cases where a person is identified, a sample of that person's DNA can be compared to the evidence from the crime scene. This comparison can help establish if the suspect did the crime. In cases where a suspect has not been found the biological evidence from the crime scene can be used and compared to perpetrators profiles. After observing the data, the next part is to confirm the tests. DNA can be used to determine who may or may not be a suspect. If the profile from the crime scene matches the profile from the victim, then the suspect is included as the possible source of DNA found at the crime scene. An example of DNA evidence being used in a crime can be if a man is killed and there are traces

A persons hair contains their DNA. Also there are several different parts of a persons piece of hair. Some different parts of hair are the root, cuticle, cortex, shaft, and medulla. I know you all are probably wondering what exactly are these different parts of the hair. Well the root is the part of the hair that’s

If flaws in testing techniques become noticeable and extreme action is not taken to control these issues, society will begin to test the validity of “forensics” as a whole. Referring back to the Motherisk case where a lack of education and professionalism took place, people began to question the science of hair testing and the reliability of investigators, and because of this many cases involving this particular laboratory had to be reevaluated (1). Employees in the Motherisk case were not informed that they were considered expert witnesses in the cases they took part in, and part of their job was to also maintain a bias free work zone, these are crucial mistakes which can lead the way for many wrongful convictions (1). The Motherisk case also demonstrated the importance of judges playing an important role in raising issues of reliability of evidence where people in question simply cannot afford it (1). Prior to final decisions judges should have all the evidence regarding the specimen of hair and the pros and cons of assessing this as a valid science (1). Only the best sciences should ever be considered in the courts. In the courts “hard science” should always be picked rather than a “soft science” because it is scientific proof (1). Hair follicle testing may one day become one of the easiest methods of testing, and will allow

I think this because, as mentioned in the lesson, comparing a sample of hair to a known suspect can be difficult, as a person’s hair can change or vary quite a bit. I suspect that if the person in question had dyed or bleached their hair, this comparison would even more difficult to make. Identifying and comparing hair is a very long a complicated process, and I believe it to be the most challenging aspect of collecting and analyzing hair. 3. Why do you think forensic scientists study bloodstain patterns?

Criminals try their best and go to great lengths to cover up their crime and leave no feasible trace of evidence. There have been major advances in forensics to make it almost impossible for criminals to cover up their crimes. There are evidence that is more persuasive then others. Evidence must be beyond a reasonable doubt to be accepted as evidence in the courtroom. Those include Fingerprints, Blood, Hair, Skin, Witness Testimony, Written Documents, semen, Shoeprints, videotapes/photographs, and Ballistics. Fingerprints are the most useful because no two people have the same fingerprints, so your fingerprints are unique. The fingerprints are the most reliable forms of identification. The only time fingerprints cannot be traced is if that person does not have a criminal history. For example When police arrested Donald Smith for the 2008 carjacking and murder of a preschool teacher in Gwinnett, Ga., it seemed certain they had the right man. But when they did the fingerprint tests it turned out to

It’s impossible to list down the physical evidence because this evidence depends upon the nature, manner and the location of the crime committed. But few physical evidences r listed out with can be encountered in most of the cases.

Various types of evidence are collected from crimes scenes. The most useful for law officials is t fingerprints. Fingerprints are the most common and most successfully form of identification. The technology that we have today, all felony offenders must submit their fingerprints, and then they are loaded into a database for