Command pattern

A Bloodstain Pattern Expert (BPE) sustains the job of formulating a theory as to what happened on the crime scene and answering questions about it. In order to do this, the BPE relies on a type of forensic science called Bloodstain Pattern Analysis (BPA) that helps obtaining DNA testing, autopsy results, bullet trajectory, and other relevant information to the case. The purpose of this paper is to explain and direct the reader into a better understanding of what this area of forensic deals with.…

A Bloodstain Pattern Analysis is called when bloodstains are found at a violent crime scene. The Bloodstain Pattern Analysis discipline has been in existence for a long time, as early as the late 1800’s. “Bloodstain Pattern Analysis focuses on the analysis of the size, shape, and distribution of bloodstains resulting from bloodshed events as a means of determining the types of activities and mechanisms that produced them” (James, Kish, and Sutton, 2005 p. 1). The Bloodstain Pattern Analysis…

Bloodstain Pattern Analysis “What processes must be undertaken to analyse bloodstain patterns at a crime scene for the purpose of presenting this evidence at a criminal trial under South Australian law?” Blood. Sticky, hot, messy, awful blood. For most of us, the sight of it turns the stomach, but in the court of law, blood can tell a lot more about a crime scene than you might think. Forensic bloodstain pattern analysis (BPA) is the interpretation of bloodstains for the purpose of…

In order to determine the sequence of events that occurred at a crime scene it is important to be able to determine and identify certain bodily fluids versus non-human substances. Based on the location of the biological evidence and its DNA can provide crucial information about the crime scene, its victim, and the suspect(s). These tests divided between presumptive and confirmatory testing. Blood evidence is the most common type bodily fluid found at a crime scene. Presumptive testing at the…

It’s Monday, December 9th. Today just seems unusual, like something big is going to happen! I wonder what it will be for a split second, then go back to studying for the Latin America quiz we have tomorrow. Mr. Fielder announces what questions we should highlight on our worksheets. I watch him go back to his desk. I look up and out the window, I see the glistening shimmer of fresh snow dancing in the sky. I cherish every second of it, wishing the time would go by slower. As time creeps closer…

Blood Spatter: Low-velocity blood spatter would be any pattern is produced due to gravity being the only acting force (Gaensslen, Harris, & Lee, 2008, pg. 88). Medium-Velocity Blood spatter is where moderate force is applied from objects which can cause pooled blood to scatter in multiple directions surrounding the contact (Gaensslen, Harris, & Lee, 2008, pg. 89). “High-velocity blood spatter is the where extreme force acting on the blood source (Gaensslen, Harris, & Lee, 2008, pg. 89)." Blood…

helps an expert to determine the bloodstains that may overlap. A single crime scene may have various bloodstains patterns. This leads to the need of a BPE though it is very important to weigh in all the evidence at the scene. Some evidence includes bullet trajectories, DNA, firearms analysis (if present), and all crime scene photos (Young, 2011, pp. 287-289). One of the bloodstain patterns is that which consists of blood drops. If a drop falls from the force of gravity alone, it may make…

Forensic Functioning In America the word forensics proposes crime in a way that excites stories on serial killers, murder, crime scene investigation, and heavy DNA analysis. In reality, this only breaks the ice on what forensic science fully consists of. Forensic science is initially any science used for the purpose of law. The evidence tested is used in the court of law, criminal investigation, and trial. A forensic scientist does perform tests on blood and bodily fluid as well as…

Swipe bloodstains which is in the catorgory of transfer bloodstain patterns, are created when a wet bloody object comes in contact with a target surface. Its use to identify an object or body part. A wipe pattene is created from an obkect moving through the a bloodstain, while a swipe pattens is created from an obect leaving bloosstain. Number is mark a swipe bloosstain becasue there seems to be a swipe of a hand print or sometime of object that has moved through the bloodstain, their are also…

Blood is an important piece of evidence at a crime scene. Blood is used for both DNA evidence and blood typing but blood spatter is just as useful. The diameter of blood drops is used to determine the height from which the blood drops fell and the blood drops shape can be used to determine the angle the blood was dropped at. Blood drops can also be used to determine the cause of death at a crime scene and blood drops can even be used to determine the medium that caused the death at the crime…