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FORENSIC SCIENCE. Serology  Blood Typing  ABO Blood Typing.

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Presentation on theme: "FORENSIC SCIENCE. Serology  Blood Typing  ABO Blood Typing."— Presentation transcript:

1 FORENSIC SCIENCE

2 Serology  Blood Typing  ABO Blood Typing

3 Serology 1&sk=#view=detail&id=9B65A26E913EDC B3B03EA0D1E9F4374F&selectedIndex=30

4 Serology  Presumptive vs. Confirmatory Testing  Blood: TMB : Tetramethylbenzidine + H2O2 -> blue/green HemaTrace LMG Luminol BlueStar

5  Serology  Gatekeeper of DNA analysis  Extraction  Quantification  Amplification  Capillary Electrophoresis  Data Analysis

6 Amplification PCR = Polymerase Chain Reaction 1.Denature 2.Anneal 3.Extend

7 Data Analysis  Single Source:

8 Data Analysis  Mixture:

9 Example

10 Hair  Cuticle  Scales  Cortex  Medulla

11 Hair Stages of hair growth: 1.Anagen 2.Catagen 3.Telogen

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13 Hair

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17 Fingerprint Analysis

18 Class characteristics

19 Fingerprint Analysis

20 Individual Characteristics

21 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)

22 Example 1.Look at unknown 1.Shape 2.Minutia 2.Compare

23 Blood Spatter Analysis Methods: -Angle of Impact -Direction of Travel -Stringing

24 Blood Spatter Analysis

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29 Glass Analysis -Concentric Cracks -Radial Fractures Which came first? A or B?


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