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15 Cards in this Set
- Front
- Back
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Who are Karl Landsteiner and Leones Lattes
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Landsteiner - 1901 ID human blood types-basis for ABO blood types.
Lattes - 1915 methods for grouping dried blood stains |
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A. Ouchterlony
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Ochterlony species identification test was developed - 1949
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DNA breakthroughs in 1984 and 1986
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1984 - DNA fingerprinting first published in scientific lit.
1986 - DNA profiling applied to forensic case and ID of Colin Pichfork. PCR invented. |
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Role of the forensic serologist
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- To determine the species type and characterisitcs of recovered blood.
- To perform blood grou testing. - Blood Stain and spatter exam. - Present finding as expert witness. - Analyze semen, saliva,& other bodily fluids. |
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Principles of Crime Scene Investigation
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- Securing the scene.
- Prevention of contamination. - Preservation of physical evidence. |
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Role of the Initial responding officer (IRO)
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Responsible for securing scene. Takes steps to prevent alteration, destruction or comtamination of physical evidence by restricting movement and scene activity.
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How are boundaries established and why is it important?
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Start at the center of the scene and extend outwards to include:
- Where the crime occurred. - Potential points of entry and exit of suspects and witnesses. - Places where the victim or evidence may have been moved. Set up to maximize preservation of evidence. |
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What is a basic protocol for scene processing?
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- Surveying the scene
- Photographing and searching the scene - Mapping and measuring the scene - Recording and documenting the location of physical evidence at the scene. - Searching for fingerprints and other physical evidence. |
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Types of Documentation
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Sketches, preprinted forms, writeen notes, photography and video.
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Types of search patterns
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- Strip or lane search
- Grid search - Spiral search - Quadrant search |
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Should appropriate reference and sample materials be obtained from the scene. (y/n) and Why?
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Yes, for comparison purposes.
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How long before a body reaches ambient temperature after death?
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18-20 hours
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What is rigor mortis and when does it appear? When does rigidity disappear?
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Rigidity due to biochemical changes in the muscle tissue.
6-12 hours after death. Rigidity remains for 2-3 days then disappears. |
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What is livor mortis and where would you look to find it?
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Weh blood circualtion stops and blood pools in the lower extremities due to gravity. Appears 1 hour after death and fully developed w/in 3-4 hours. Can be used to determine whether the body has been moved from its original position
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Can hydrolyzed body fat prevent decompisition and preserve the body?
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Yes
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