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An essay on forensic science
An essay on forensic science
An essay on forensic science
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You have probably heard of the work of the coroner . It is a profession widespread nowadays, thanks to shows like CSI , Bones , Dexter , among many others who disclose a bit day to day legal professional . It is clear that the series are a bit fanciful and dramatized : it is not for the expert interrogate the suspects and the skills are not always so quick . Depending on the type and state of the evidence may take months to conclude an expert report . [ 5 ]
However , the series has attracted the attention of people to this kind of profession, as if they were a kind of attractive . And this , of course , is valuing this new area in Brazil , which despite having many shortcomings such as lack of literature in Portuguese and lack of specific courses and forensic sciences in universities , is developing more and more.
Took a greater knowledge of this area by means of a journal I get home from the regional council of chemistry. And it was from there that I got interested and researching the forensic field . And so here I am, to relate to the profession of genetic coroner . First, allow me to present what makes a coroner , according to my knowledge -based [ 3 ] and [ 5 ] .
The work of the expert is basically collect and analyze traces that were left at the scene , later turning them into concrete evidence that can convict or acquit the defendant , through expert reports meticulously . There are two types of experts: The field collecting evidence at the crime scene and laboratory analyzing traces .
And among so many remnants left at the crime scene are the biological evidence that can identify, through the collection , analysis and comparison to whom the DNA extracted from the crime scene belongs . " Due to the fact that pe...
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...t current and popular case we can clearly see not only the use of forensic genetics but also in other areas of this science was the "case Isabella." The girl was defenestrada of the building window of her father , Alexandre Nardoni on March 29, 2008 . The case has had repercussions throughout the country and the world was solved with the help of experts and the girl's father and stepmother were convicted . [ 4 ]
The techniques well as the study of DNA in forensic genetics are still under development. The improvement can ensure more efficiency in the analysis and therefore greater reliability in forensic evidence . The benefits that forensic science can bring are numerous : seemingly intractable cases can be clarified and people falsely accused may be acquitted .
And so the forensic sciences will walked : to elucidate the facts and the attainment of justice .
Nowadays, DNA is a crucial component of a crime scene investigation, used to both to identify perpetrators from crime scenes and to determine a suspect’s guilt or innocence (Butler, 2005). The method of constructing a distinctive “fingerprint” from an individual’s DNA was first described by Alec Jeffreys in 1985. He discovered regions of repetitions of nucleotides inherent in DNA strands that differed from person to person (now known as variable number of tandem repeats, or VNTRs), and developed a technique to adjust the length variation into a definitive identity marker (Butler, 2005). Since then, DNA fingerprinting has been refined to be an indispensible source of evidence, expanded into multiple methods befitting different types of DNA samples. One of the more controversial practices of DNA forensics is familial DNA searching, which takes partial, rather than exact, matches between crime scene DNA and DNA stored in a public database as possible leads for further examination and information about the suspect. Using familial DNA searching for investigative purposes is a reliable and advantageous method to convict criminals.
Billings, Paul R. DNA on Trial: Genetic Identification and Criminal Justice. California: Cold Spring Laboratory Press, 1992.
Defense experts are required to help the defense attorneys defend and breakdown all of the doubts in the prosecutors scientific findings in criminal cases. Scientific information is integral to a criminal prosecution, and a defense attorney needs to have an expert to assist he/she in discrediting the prosecution (Giannelli, 2011).
“Advance in Forensics Provide Creative Tools for Solving Crimes.” www.ctcase.org. Np. n.d. Web. 17 March 2014.
In today’s time, modern Crime Scene Investigation has increased rapidly. From throughout the late 1900’s and in the early 2000’s (Taylor 1). For all of the evidence that they find, a solid foundation has formed over the thousands of years of Crime Scene
"Using DNA to Solve Crimes." U.S. Department of Justice: National Institute of Justice. (September 9, 2014). Web. 29 May 2015.
Whereas the real picture of forensic evidence is unlike what is represented in movies and television shows where a fingerprint or a trace of hair is found, then it’s game over for the criminal. Reality is not as straightforward. As more people are exposed to the unreal forensic world through television and media the likeliness for a wrong conviction increases with juries assuming the evidence involves more science than what it really does, this is known as the CSI Effect. Further education and training is needed for the people of the court, the forensic specialists, and so called experts. The people in courts do not question any of the ‘professionals’ and just trust in their expertise. The court could overcome this perception by requiring explanation of error rates in a forensic field. To do this, testing examiner error rates will be necessary which means further research. Forensic science has such a large effect on the prosecution of suspects, experts have been known to provide questionable and at times incorrect evidence. When a false conviction occurs the true perpetrator is set free. Once realized, the public doubts the justice system and the reliability of the forensic evidence even more. At this point in time, forensic is an inexact
Forensic science is the employment of science to solve crimes. Forensic scientists use evidence from the crime scene to track the criminal down or determine the guilt or innocence of a suspect on trial. Some evidence examples that forensic scientists use for their job include fingerprints, footprints, teeth marks, blood, semen, hair fibers, bullets, broken glass, knives, and guns. Other useful pieces of evidence criminals are less likely to think about are descriptions, provided by the coroner, of incisions and bruises on the victim’s body. These descriptions can provide clues to the scientists on what kind of weapon was used for the crime. Before anyone can begin doing all this, however, they must receive an education.
The collection, custody and preservation of forensic evidence is a vital aspect of evidence integrity, without proper adherence to these procedures, crucial evidence that could potentially have great impact on a court case could be rendered useless. In the case of criminal proceedings, a skilled defence lawyer will look to scrutinise every step taken by forensic practitioners’ involved within the case in regards to the continuity of the evidence, in doing this they attempt to undermine the practitioner’s ability to properly carry out strict evidence collection, protection and preservation procedures and also look to find fault in the techniques they used to carry out these procedures.
“Crime Scene Investigator (CSI)”. Explore Health Careers.Org. 18 March 2014. Web. 14 March 2014. .
Forensic Science, recognized as Forensics, is the solicitation of science to law to understand evidences for crime investigation. Forensic scientists are investigators that collect evidences at the crime scene and analyse it uses technology to reveal scientific evidence in a range of fields. Physical evidence are included things that can be seen, whether with the naked eye or through the use of magnification or other analytical tools. Some of this evidence is categorized as impression evidence2.In this report I’ll determine the areas of forensic science that are relevant to particular investigation and setting out in what method the forensic science procedures I have recognized that would be useful for the particular crime scene.
investigators take from the crime scene. With scientific methods it helps investigators to produce a
The transitional growth in the forensic science sector has not been without challenges. Though the world has experienced increased capabilities and scientific knowledge, which has led to faster investigations and results, many forensic experts have argued that forensic laboratory testing, in the light of 21st century technological advancements, is yet to meet the expected rate in quick available testing and analysis (Mennell & Shaw, 2006). This is with respect to the growing rate of crime and the high demand of quick crime scene testing and analysis. In the science of crime scene, analysis and interpretation of evidence is majorly dependent on forensic science, highlighting the change in the role of forensic sciences (Tjin-A-Tsoi, 2013). In the business of forensic science, time is beginning to play important role in the evidence testing and analysis which is becoming crucial in reducing ...
Forensic science has paved the way to a new world of technological advancements in solving crime, through DNA analysis, new technology such as M-Vac, improving systems such as CODIS and other investigative methods. As forensic science technology advances, the chance of an individual being able to commit a crime and walk away free without leaving any trace of evidence will lessen. While forensic science has its limitations, it can be the only way to provide an accurate account of what actually occurred at some crime scenes.
Forensic science has now been recognized as an important part of the law enforcement team to help solve crimes and cold cases. The advances in technology are being used each day and we must continue to strive to develop better advances in this field. The recent discovery of using DNA in criminal cases has helped not only positively identify the suspect, but it has helped exonerate hundreds of innocent individuals. “With new advances in police technology and computer science, crime scene investigation and forensic science will only become more precise as we head into the future.” (Roufa, 2017) Forensic science and evidence helps law enforcement officials solve crimes through the collection, preservation and analysis of evidence. By having a mobile crime laboratory, the scene gets processed quicker and more efficiently. Forensic science will only grow in the future to be a benefit for the criminal justice