ipl-logo

Forensic Evidence Analysis

214 Words1 Page

Firstly visual examination and presumptive testing were conducted to determine the state of evidence and whether the sample contained any useful information in a forensic sense. Throughout this process biological samples of bloodstains, semen and saliva were screened.

Throughout this visual examination and presumptive test stage a small amount of semen was found on the underwear found at the crime scene. Also on all the evidence items small amounts of bloodstains were identified to positive presumptive testing results, these were extracted with Chelex® DNA extraction.

The Chelex DNA extraction process was rapid and involved no organic solvents (Musapa, 2013). The DNA was isolated and purified using standard protocols. Subsequently, real-time

Show More
Related

  • Jessica Lunsford Case Study

    1685 Words  | 7 Pages

    The first step is to place a drop of distilled water on a sterile swab and swab a small portion of the suspect substance, The place the swab against a presumptive blood test and an immediate color change should occur if the reaction is positive. If the stain is negative the suspected blood stain may be ignored. If the reaction is positive an evidence number is assigned to the suspected blood and the stain is photographed and measured. The forensic technician should note the stain was collected due to a positive reaction. The blood is then collected and packaged, and the package is sealed and labeled for identification Upon collecting blood if the blood is wet a sterile swab should be rotated in the stain, transferring the blood to the swab.

    Read More

  • Steven Barnes Research Papers

    463 Words  | 2 Pages

    Dr. Pagliaro the supervising criminalist, testified that seminal fluid was detected on the victim's underwear and testing was conducted. The result matched the victim’s blood type, but were inconclusive regarding Barnes. Also DNA testing conducted before the trial were inconclusive. Three forms of unvalidated forensic science were used against Barnes at trial, however. Pagliaro testified that she conducted a photographic overlay of the victim’s jeans and use a print from Barnes truck and determined that the two patterns were similar.

    Read More

  • Jessica Lunsford Murder Case

    2006 Words  | 9 Pages

    Photography, measurements, and reconstruction of bloodstain all complete. I then took samples of the blood for DNA analysis. It was determined later that the blood was Jessica’s bloodstains and the semen belonged to sex offender Couey due to the sexual assault he committed to 9yr.old Jessica. Trace evidence: Jessica’s left thumb and Couey’s two index fingers were stamped on an old pizza box discovered in Couey’s bedroom closet. A glass table in the bedroom produced more matches.

    Read More

  • Andrews V. State Of FLORIDA: A Case Study

    1850 Words  | 8 Pages

    Further, control samples were used which would enable the detection of errors in the procedure. The jury decided that these proved the reliability of the methods of DNA analysis. It was also concluded that DNA fingerprinting test results were much more reliable as compared to methods like polygraph testing, hypnosis, intake of truth serum etc. because of the scientific principles and procedures followed in this

    Read More

  • Forensic Science By Andrea Campbell: Article Analysis

    471 Words  | 2 Pages

    Forensic Science is evidence that typically comes from sources like fingerprints, bodily fluids, and bullets. In “Forensic Science: Evidence, Clues, and Investigation” written by Andrea Campbell, she explains how forensic science can make or break a criminal case. Campbell has given readers many reasons to believe that forensic science is without a doubt an important piece of evidence to present at trial. Some reasons Andrea Campbell explains are that it can help narrow down suspects in order to find the criminal responsible for a crime, and that it can provide physical evidence that can provide further information about a case.

    Read More

  • Forensics Case Study Summary

    596 Words  | 3 Pages

    CASE REPORT Introduction: Me and my team of forensic anthropologists were called in by the police department to examine skeletal remains and figure out it’s gender, ethnicity, age, and height by using it’s bone measurements. Summary of Findings: Determining the sex: To determine the sex, we took measurements of the pelvis, skull, femur, and humerus. The results for the pelvis were both equally male and female.

    Read More

  • Assignment 1: Problem Solving Criminal Evidence

    367 Words  | 2 Pages

    The suspect who I think left the fingerprint is suspect H. The fingerprint found at the crime scene can be classified as a loop with a delta on the right side. Suspect A, B, and D’s fingerprints are arches, in addition to that, Suspect E, has a whorl fingerprint, thus all are able to be eliminated from being the possible suspects. The suspects left are C, F, G, and H, all of which share the loop characteristics.

    Read More

  • Bloodstain Patterns In Crime Scene Investigation

    1099 Words  | 5 Pages

    Carefully and thoroughly analyzing the significance of the position and shape of blood patterns along with their origin and trajectory is very important in an investigation. The process is sufficiently complex and should only be done by an examiner who is experienced in such determinations. The interpretation of bloodstain patterns is the most important of all and requires carefully planned control experiments that use surface materials comparable to those found at a crime

    Read More

  • Forensic Science Case Study

    665 Words  | 3 Pages

    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.

    Read More

  • Forensic Science: The Murder Case Of Leanne Holland

    1915 Words  | 8 Pages

    He found that Police procedures with regard to evidence referencing, police chain of custody and overall collection of evidence. He stated that the Queensland Police Force failed the most rudimentary collection protocols and this lead to confusion in the labelling of exhibits and their actual obtaining from the accused. He further pointed out that searches were conducted in a manner that exposed the primary and secondary crime scenes to contamination. A video of the Police search showed that none of the officers involved wore protective clothing, gloves or booties; that swab testing of the car showed that the officer involved in collection conducted the Sangur strip test and actually allowed his fingers to come in contact, thus providing a false positive indication for human blood, when it was noticed that he had a small cut on his finger; fingerprint collection was done before testing for human enzymes which also could have produced a false positive due to the chemical makeup of the powder used (the force used Magnapowder which has a metallic composition and this reacted with the test strips); photographs of the boot floor showed that none of the items were laid out on white protective paper. This would also have prevented cross contamination and enabled the collection of any evidence that fell from the boot.

    Read More

  • Exculpatory Evidence Analysis

    528 Words  | 3 Pages

    Discovery is a formal and informal exchange of information between the prosecution and the defense. The importance of discovery is to ensure that the adversary system does not give one side an unfair advantage. When it comes to discovery there are two types of evidence. Exculpatory, which is any evidence that may be favorable to the defendant at trail either by tending to cast doubt on the defendant’s quilt or by tending to mitigate the defendant’s culpability, thereby potentially reducing the defendant’s sentence, and impeachment evidence, which is any evidence that would cast doubt on the credibility of a witness.

    Read More

  • DNA In Forensic Science

    1116 Words  | 5 Pages

    This can be done by DNA fingerprinting or by collection of body fluids, such as saliva, semen, urine, blood, skin and hair, found at the scene. Secondly, DNA testing can rule out possible suspects as well. DNA testing can be used to free individuals

    Read More

  • Digital Forensics

    2373 Words  | 10 Pages

    1.1 Overview of Digital Forensics Digital forensics, sometimes known as digital forensic science is a branch of computer forensic science encompassing the recovery and investigation of material found in digital devices, often in relation to computer cyber crime. Information and Communications Technology (ICT) working environments are experiencing increased computer use for other than work-related reasons. User activities may include but are not limited to browsing the Internet for private purposes and using online search engines for work-related information. As ICT has grown at the same time advances in social networking, mobile technology, various cloud computing and storage solutions have increased the information flow within organizations.

    Read More

  • Forensic Psychology

    1537 Words  | 7 Pages

    Forensic Psychology And Its Media Portrayal: Primal Fear Forensic psychology is a part of psychology that deals more with legal matters than academic or clinical materials. For the past century, Forensic psychology has been widespread in the popular culture, particularly in the media due to its role as the intersection between law and psychology. Most people who do not have an experience on the legal system rely on movies and TV shows as their general source of information about legal procedures. Thus, the portrayal of forensic psychology in media creates a massive impact to the beliefs of the public. Primal fear, a movie directed by Gregory Hoblit in 1996, portrays the parallel of opinions of the public and the lawyers on insanity defense,

    Read More

  • Elements Of Crime Scene Investigation

    1422 Words  | 6 Pages

    According to Bertino and Bertino (2012) there are seven components of any crime scene investigation: Maximizing safety and securing the scene: Usually the police are the first to arrive at any crime scene and are therefore referred to as the ‘first responders’. The crime scene is dynamic and ever changing. It is therefore the actions of the first responder which will ultimately dictate whether the crime will be successfully solved or not. There are two primary tasks of the first responding officer.

    Read More

More about Forensic Evidence Analysis

Open Document