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Published byPeyton Freckleton Modified over 9 years ago
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FORENSIC SCIENCE
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Serology Blood Typing ABO Blood Typing
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Serology http://www.bing.com/images/search?q=anti%20abo&qs=n&form=QBIRMH&pq=anti%20abo&sc=8-8&sp=- 1&sk=#view=detail&id=9B65A26E913EDC14897103B3B03EA0D1E9F4374F&selectedIndex=30
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Serology Presumptive vs. Confirmatory Testing Blood: TMB : Tetramethylbenzidine + H2O2 -> blue/green HemaTrace LMG Luminol BlueStar
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Serology Gatekeeper of DNA analysis Extraction Quantification Amplification Capillary Electrophoresis Data Analysis
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Amplification PCR = Polymerase Chain Reaction 1.Denature 2.Anneal 3.Extend
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Data Analysis Single Source:
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Data Analysis Mixture:
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Example
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Hair Cuticle Scales Cortex Medulla
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Hair Stages of hair growth: 1.Anagen 2.Catagen 3.Telogen
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Hair
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Fingerprint Analysis
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Class characteristics
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Fingerprint Analysis
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Individual Characteristics
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Fingerprint Analysis Collecting prints: Porous surfaces (anything that can absorb): Ninhydrin : causes purple reaction DFO : glows when illuminated by light Nonporous surfaces (things that don’t absorb): Powder (black and fluorescent) Pictures Cyanoacrylate (superglue fuming)
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Example 1.Look at unknown 1.Shape 2.Minutia 2.Compare
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Blood Spatter Analysis Methods: -Angle of Impact -Direction of Travel -Stringing
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Blood Spatter Analysis
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Glass Analysis -Concentric Cracks -Radial Fractures Which came first? A or B?
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