Forensic science

Create a 4 page paper that discusses forensic science(subject) study of forensic collection and analysis of crime scenes. Physical evidence originates from objects or rather non-living things while biological evidence is obtained from living things (Enotes.com., 2011). Examples of biological evidence include: DNA and blood stains while physical evidence include: tire marks, footprints, paint, building materials, fibers and fingerprints. According to the Locard’s exchange, evidence is usually found at the crime scene simply because the perpetrator must always leave something behind due to contact with objects and even the victim. It should also be noted that the perpetrator is also very likely to take something away from the crime scene that will be found on him. Crime scene investigation takes place at the crime scene while forensic science happens in the laboratory. This paper highlights on the analysis, evaluation and synthesis of a crime scene in relation to an investigation.Jackson and Julie (2004) reveal that this stage takes place at the scene of the crime. The Crime Scene Investigator (CSI) is expected to take his or her time to understand the logistics of the crime. This stage entails the determination of a systematic approach that will be used to find and collect the evidence. The CSI defines the exact extent of the crime scene followed by securing the core area by placing a physical barrier. The barriers could be in the form of a scene tape, police cars, horses and even the police officers.A cone area can be defined as the most obvious area where most of the evidence can easily be traced (Jackson & Julie, 2004). The crime scene might be in a house or the even the entire neighborhood. The first chance to conduct a thorough search at the scene is very important. The next step is to obtain a search warrant from the District attorney. The CSI will be free to make an initial walk through from which he will take notes of details that are likely to change with time.

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