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(18 results)



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    • Page 4

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    • 4 ABSTRACT There are several ways to identify a potential suspect in a crime which can range from an eye witness statement to something as small as a single drop of blood. Just as a physical fingerprint can be used in identification, DNA...
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    • 5 1 INTRODUCTION DNA can be used to distinguish individuals based on the individuality of their profiles. A profile is a visualization of the genetic code which shows locations, or loci, of particular regions on the genome where the code can be...
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    • 6 physical fingerprint should be processed for the print only or used as both a fingerprint and a possible source of DNA. Having knowledge of the dual purpose of a physical fingerprint, not only as a source of evidence but as DNA as well, could...
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    • 7 has been recovered, such as with DNA, so it is important to know what types of interferences are associated with each type of recovery procedure so that no damage will occur to the evidence at hand (Azoury et al., 2002 Stein et al., 1996; Zamir...
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    • 13 double-stranded DNA, some are specific for single-stranded molecules, others are active towards both and still others can cleave residues at the ends of DNA molecules or even anywhere along the DNA chain thus providing damage to the DNA....
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    • 14 number of glass microscope slides were touched by a donor and held for 3-5 seconds. This was to ensure that a solid print was placed on each slide and therefore a sufficient source for the DNA to be collected. The experiment had two trials, with...
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    • 18 of the ladders was completed prior to the sample run, and the peak heights were too high, the loading cocktail was modified to contain 0.25μl of ILS 600 and 9.75μl of formamide. Due to limit of chemical resources, only those samples that had...
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    • 21 Sample Concentration00.511.5010203040506070Sample NumberConcentration nanogram/microliter Figure 1: Concentration of DNA in ng/ μl obtained from each physical fingerprint sample. Figure 2: Images of physical fingerprints at beginning and end of...
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    • 28 non-secretor. It can be concluded that DNA was indeed successfully isolated from most of the latent fingerprints and this part of the hypothesis was therefore supported. It was also hypothesized that concentration would decrease with an increase...
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    • 29 The last aim of this study was to see whether or not a correlation existed between degradation of the physical latent fingerprint and degradation of the DNA within it. Again there was no relationship between degradation of physical fingerprint...
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    • 30 4.3 Future Research Fingerprints as a criminal identification, along with perhaps DNA profiles, may allow crime laboratories and law enforcement agencies to work together and have access to these profiles to help solve cases. This research...
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    • 31 5 REFERENCES Applied Biosystems (2006). Quantifiler Human DNA Quantification Kit User’s Manual. Applied Biosystems Foster City, California. Chapters 1-6. Ayaly-Torres S , Chen Y, Svoboda T, Rosenblatt J and Van Houten B. Analysis of Gene...
    • Page 32

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    • 32 Gunn, Alan. Essential Forensic Biology. Forensic DNA Typing. Wiley & Sons, Ltd. 2006. pp39-53 Kanable, Rebecca. DNA from fingerprints. Retrieved July 2005 http://www.officer.com/publication/article Knowles A M. Aspects of physicochemical methods...
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    • 33 Roux C, Gill K,Sutton J, Lennard C. A further study to investigate the effect of fingerprint enhancement techniques on the DNA analysis of bloodstains. Journal of Forensic Identification 1999;49(4):357-376. Saviers, K. D. Latent Print Powders....
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    • 34 VanHoofstat D, Deiter LD, DePaw I, Van den Eeckout E. DNA typing of fingerprints using capillary electrophoresis: Effects of dactyloscopic powders. Electrophoresis 1999; (20):2870-2876. Walsh PS, Metzger DA, Higuchi R. Chelex 100 as a medium for...
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    • P a g e | 25 all time or else they would suffer serious punishment. Of course, Daisy knew this and reached for her passbook that she always carried with her. Shock and fear crossed her face as she exclaimed she had left the passbook in the kitchen...
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    • Chelex extraction methods are simpler and much faster than organic extraction. Chelex is an ion-exchange resin which means that it is made up of ions that act as chelating groups and bind to metal ions like magnesium. This removes magnesium from...

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