Blood Spatter Investigation

Forensic scientists and investigators can employ numerous forensic techniques to help solve this crime. These can include using biological examination in terms of detecting and identifying bloodstain pattern analysis, analyse ballistics and fingerprints. Guns are known to produce a distinct bloodstain pattern, which is the High-Velocity Impact Spatter where tiny droplets are caused by blood travelling at high speeds. By using this knowledge that investigators have about guns, they can track down and reconstruct the crime scene using biological examination. Additionally, gunshots leave different types of evidence behind, depending on the distance in which the gun is shot.

It 's circumstantial, biological, and individual. The crime scene investigators dusted the scene for DNA samples. They picked up hair and some fibers. They tested the hair and analyzed it. It turned out to be the same as the one found on the Bundy house.

In cases where a suspect is identified, a sample of that person’s DNA can be compared to evidence from the crime scene. Also, in cases where a suspect has not yet been identified, biological evidence from the crime scene can be analyzed and compared to offender profiles in DNA databases to help identify the perpetrator. DNA can be used to identify criminals with incredible accuracy when biological evidence exists. In all, DNA technology is increasingly vital to ensuring accuracy and fairness in the criminal justice system. DNA profiling was originally developed as a method of determining paternity.

Bloodstains were also recovered from Laura’s mattress and other pillowcase through the use of the chemicals Ameeto Black and Luminol. The amount of blood found indicated to investigators that she had been murdered. In 1991, scientists at the Department of Forensic Medicine, Bern, Switzerland investigated if “Some of the commonly used presumptive test reagents for identification of blood and semen could potentially affect the recovery of intact high-molecular-weight de- oxyribonucleic acid (DNA) from evidentiary samples. Thus, the capability of performing restriction fragment length polymorphism (RFLP) analysis on evidentiary samples could be compromised.” Through their investigation they determined that “Except for the phenolphthalein treatment, the quantity of extractable, high-molecular-weight DNA obtained was comparable with that of untreated stains.” This knowledge allowed investigators to confidently test the recovered blood stains from Laura’s mattress and pillowcase and determine that they shared an origin with the pillowcase discovered in the

Anthropologist need to be able to differentiate between human bone and non-human bone because it allows you to establish that the victim is dead and confirm that there is an entire human skeleton. Anthropologists need to conduct taphonomic assessments, this term has come to mean “the interpretation of all events affecting the remains between death and discovery”, the uses of taphonomy are to identify the deceased, determine the cause of death, estimate the post mortem interval and find the clandestine graves. Identifying the deceased is important because you want to make sure you have the right body for the person that has been killed and you want to be able to inform the correct family (if there is any). Determining the cause of death is important because you can look for anyone with access to the murder weapon who had contact with the

artery, whether the injury is covered by apparel, and the position of the victim when the injury was inflicted. Arterial blood staining is accompanied by demonstrable arterial damage. The hypothesis of a bloodstain pattern being the result of arterial spurting would be supported by identifying information within the autopsy report about a severed artery. A bloodstain analyst would require to review the bloodstain pattern by conducting an autopsy report, or verbalize directly to the forensic pathologist who conducted the autopsy report. These patterns are customarily very distinctive due to the overall quantity of bloodstains observed.

An autopsy of the remains was performed. The lab assistants were given the instructions to analyze and research facts collected via physical observations, crime scene investigation and initial reports and to explain and analyze causes and processes that occurred regarding the evidence gathered. Skeletal Assessment: On the

career journal activity: 1.2.3 Bone Detectives description: read interviews with forensic anthropologist and synthesize a definition of the career. my work: A forensic anthropologist is a group of people who investigate a dead body to discover its gender, ancestry, stature, ethnicity and other unique features about it. Through their investigations they can also discover how the victim may have died and other important background information that can move the investigation further in solving the case. A forensic anthropologist needs to be able to conduct research, know their bones, muscles and other body parts along with be able to make educated conclusions related to the received data and observations they find and make. activity: forensic anthropologist

When DNA is found, it puts the case on a new level. DNA analyst and investigators have a specific job to find evidence on or at the crime scene. Lead prosecutor, Marcia Clark, as she was the one that found the glove at the scene and the glove on his property, also stumble across some DNA. DNA was matched and tracked back to O.J. Blood stains left behind were 100% traced back to Mr. Simpson.

Dr.Hirt was another doctor who did autopsies. He would take the bodies of freshly gassed prisoners and autopsy them. He studied these bodies in order to prove the “superiority” of the Aryan race. Dr.Mengle was very famous for experimenting with twins. He had a fascination with them.

In the United States, the death penalty and the question of executing innocent people has become a fundamental topic of discussion. Jay D. Aronson and Simon A. Cole propose that, “due to the certainty attached to DNA evidence in public discourse, it can be used as a lever with which to challenge law’s claims to truth-making authority, and to undermine public trust in the death penalty” (Aronson and Cole 603). Shlomit Avraham maintains that “the success of obtaining DNA profiles from touch DNA has opened up possibilities and led to the collection of DNA from a wider range of exhibits” (Avraham 793). How many people have been released or imprisoned due to faulty accusations? Where are DNA samples found, and what is it?

The vials containing the blood are labeled and sent to a testing facility. A third field I want to talk about related to medical technology is the role of a medical laboratory technician. A medical laboratory technician perform routine tests in medical laboratories. They prepare samples of body tissue and perform various laboratory