A positive aspect of this is that forensic scientists only need a small amount of a sample to get the results they need (“Forensic Science” 12). These samples can come from many other forms of identification other than fingerprints and bloodstains. A few moderate examples include strands of hair, tiny beads of sweat, and a saliva specimen (“Forensic Science” 12). Forensic Science Technicians stated that “crime scene investigators may use tweezers, black lights, and specialized kits to identify and collect evidence.” They also stated that examining autopsies prove to be beneficial in a crime investigation (“Forensic Science Technicians”
My thoughts Forensic science is used everywhere. It can be used to arrest and convict someone of a crime. Before watching The Real CSI video, I thought using fingerprints and DNA will get you 100% accurate results. Throughout the video my thoughts about the subject began to change.
It has been said to have revolutionized forensic investigations. Deoxyribonucleic acid profiling has been used to exonerate the wrongly accused, convict the correct criminal, and even do something as little as finding out who the father of a child is (Roewer, Lutz). Deoxyribonucleic acid today can be obtained from processing bodily materials such as spit, semen, or blood. Because of the fact that all cells in the human body contain a nucleus and nuclei contain DNA, virtually any evidence left behind that is a bodily fluid can be tested for Deoxyribonucleic acid to help tie or eliminate those from a crime
Science has come a long way over the years. It has helped countless every day struggles and cure diseases most commonly found. What you don’t hear about however is the advancement of forensic science. Forensic science has helped solve countless cases of murder, rape, and sexual assault. In the case of John Joubert, it helped solve the murders of three young boys with one small piece of evidence that linked him directly to the crime.
Crime Scene Processing Emily King 0551488 FRSC 3010H October 23rd 2015 Properly processing a crime scene is extremely important and can determine the outcome of a case. If evidence is collected incorrectly it may get destroyed or contaminated. When there are only trace amounts of evidence, it is very important that all of it is collected properly. The most important part of crime scene investigation is the investigators. In order to assess the crime scene, each investigator must be competent and know how to do their job correctly.
Statement of the Problem DNA has become a vital part of criminal investigations. DNA can include and exclude suspects of criminal investigations. During a criminal investigation, all DNA should be collected, properly preserved and tested, but at times this does not occur or the technology was not available for this process to occur. In addition, DNA has become an imperative portion of exoneration cases.
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.
DNA in Forensic Science DNA is the carrier of genetic information in humans and other living organisms. It has become a very useful tool in forensic science since it was discovered. In forensic science, DNA testing is used to compare the genetic structure of two individuals to establish whether there is a genetic relationship between them. One example of the use of DNA in forensic science that is important in biology today is comparing a suspect’s DNA profile to DNA that was discovered at a crime scene.
DNA profiling was initially developed as a method of determining paternity. Which samples taken under clinical conditions were examined for genetic evidence that could link parent to child. It first made its way into the courts in 1986 when police in England asked molecular biologist Alec Jeffreys. She had begun the investigation of the use of DNA for forensics, to use DNA to verify the confession of a 17-year-old boy in two sexual murders in the English Midlands. As the result in the test, it proved the teenager was innocent.
Forensic Science Technicians collect, identify, classify, and analyze physical information related to criminal investigations. They perform tests on weapons or substances, such as fiber, hair, and tissue to determine significance to investigation. They can testify as expert witnesses on evidence or crime laboratory techniques. They may also serve as specialists in area of expertise, such as ballistics, fingerprinting, handwriting, or biochemistry. Forensic Technicians are responsible for many tasks, these include: • Keeping records and preparing reports detailing findings, investigative methods, and laboratory techniques.
Forensic anthropology is the branch of anthropology which deals with the recovery of remains as well as the identification of skeletal remains which involve detail knowledge of osteology (skeletal anatomy and biology). In other words, forensic anthropology is the application of anthropological knowledge and techniques in the identification of human remains in medico-legal and humanitarian context. Forensic anthropology includes the identification of skeletal, decomposed or unidentified human remains. Forensic anthropology may also help determine the age, sex, stature and unique features of deceased from their remains. Personal identification is one of the main aspects of medico-legal and criminal investigations.
The Department of Justice says, "States began passing laws requiring offenders convicted of certain offenses to provide DNA samples. " That DNA evidence can help convict someone of a crime and it helps to uncover more things about the crime itself. Investigators have been using forensic science to help them solve cases since before the 90 's, mostly fingerprints that were found at the crime scenes and on the victims (O 'Brien). DNA evidence has solved countless cases including ones that happened over a prolonged period of time because of the technological advancements there is
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.