(Aronson, 2007)
The problems and future of DNA Testing
The scientific soundness of the DNA test has not been doubted at all. Courts have increasingly relied on the outcomes of DNA tests. The common man is at a loss to understand the complexities of the method, and as a result in jury trials it is not taken as standard proof but approached with hesitancy. Jurors are ignorant of science and the 'principles of modern genetics' and can get quite confused by all the jargon and confusing tactics of lawyers who are more interested in their cases rather than scientific truth. ("DNA Fingerprinting and Forensics," 2006) Thus the very process that can throw light on the proceedings and produce unfaultable evidence gets mired in sticky debates. The actual concern about the DNA test is not a confused jury but the process of collecting the data and analyzing it. There is no safeguard or guarantee to rule out a false match and insufficient identification data. Unlike fingerprints which do not require complex collection procedures and interpretation techniques, DNA testing cannot be said to be totally infallible. ("DNA Fingerprinting and Forensics," 2006)
The constitution of the United States, guarantees that no person will be convicted except under the condition that there is proof beyond all reasonable doubt about the culpability of the accused. Therefore the very DNA evidence will have to be seen in the light of absolute certainty. However in civil suits like the fixing of paternity, the evidence is not required to be exact but preponderance in favor of the producing party will suffice. DNA finger printing is the only method that is reliable and perfect in civil suits of this kind where fingerprinting will be of no help. ("DNA Fingerprinting and Forensics," 2006) the inherent problems associated with the DNA fingerprinting are more than just the reliability factor. Courts have begun taking notice of DNA matches and have accorded the same status for it as fingerprinting. The greater problem is the time consumed in the profiling of the DNA as compared to the fingerprint technique especially in a spot where the evidence need be taken from objects and the scene of occurrence. DNA profiling lacks the speed of fingerprint analysis because of the difficulty of matching profiles of offenders to the samples. One important consideration is the mounting crime and backlog of cases that require examination. There is a shortage of qualified examiners and therefore work overflow has slowed and regarded the process of developing the method into better functional applications. (Lazer, 2004)
Fingerprint experts are common part of the criminal investigation squad and also there are forensic laboratories that have records of fingerprints which can be profiled and matched within seconds. The technical expertise for matching the fingerprints is available and there need not be delay in time in further action where immediate apprehension of persons are required based on the match. As stated earlier, the dearth of experts have caused the system to go slow and it takes more time to analyze and match the data which in critical cases can frustrate the very investigation. Secondly the persons who collect the required samples need not be the same persons trained in the collection of samples for DNA tests. While fingerprinting is common and can be done by most technicians on the spot, DNA samples require more trained hands. Either the police or forensic officers have to be trained in the collection of or since it takes time, more importantly the preservation of the samples for a longer period of time. The crime scene material stored in labs but when the investigating and adjudication is complete the stored data and objects became unreliable for further use. Because DNA testing takes time and the long gap makes the evidence shaky and not by itself complete. (Lazer, 2004)
The legislation in some states recently requires that all biological evidence be stored carefully indefinitely. To overcome the voluminous demand, field kits for DNA testing is proposed. It is possible for such kits to be treated which will help extracting, storing and data analysis and on the scene assessment of the available information. The profiling of DNA is itself evolving and in future the collective action of experts and the use of novel methods like STR typing and SNP assays would speed up the analysis and sharpen its accuracy. The collection of DNA from the people and codifying it could have...
Fingerprints Improving the Science of Fingerprinting: A Literature Review Fingerprints are one of the most commonly employed tools that we have in investigating crime. This powerful forensics methodology has contributed to the solving of countless criminal cases and has been used as convicting evidence in courts of law. However, as this literature review shows, even the use of fingerprints is in a state of evolution as we gain ever greater and more
All samples must be properly collected, using gloves and other tools in order to prevent contamination, as well as properly stored until analysis can be performed. It is vitally important that this chain of evidence be maintained so that the evidence collected from using the samples can then be admissible in a court of law. This requires those collecting and storing samples not only to use gloves and tools to
Fingerprint Classifications Practical Applications of Fingerprint Classifications in Forensic Science Fingerprint identification has numerous practical applications. Particular fingerprints may be matched to individuals because they are distinct and unchanging. The individuality of fingerprints is based on the ridge structure and minutiae. The recognition of these landmarks, including shape, number, and location is an automated process by which computer algorithms filter data and match a subset of individuals with a particular print. More
E., their individuality and permanence, are the basic reason behind their having supplanted other previous methods of personal identification and explain the fact that fingerprints continue to hold their own against other more modern methods of identification such as DNA testing. Individuality of Fingerprints In more than 100 years since fingerprint records of individuals started to be collected and compared, no two fingerprints of two different persons, including those of identical twins,
Abstract This paper discusses the origins of fingerprinting and the usage of fingerprint analysis in the field of forensics. It traces the history of the practice from the 19th century on into the 20th and discusses the methods used to obtain fingerprints from a crime scene. It also examines some of the problems of fingerprint analysis and how it is not a foolproof manner of identification and never has been. It
DNA Finger Printing Techniques to retrieve DNA and the development of DNA probes have come up and made it possible the matching of DNA molecules to other DNA molecules to serve purposes like identification. This process has been incorporated into what is known as DNA fingerprinting.DNA fingerprinting is therefore a test for identification and evaluation of genetic information i.e. ones DNA. This technique is referred to as a fingerprint because two
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