Dactyloscopy - the study of fingerprints (dactylograms) identification., Fingerprint - When the ridges press against things leaving a mark or impression, Epidermis - The Outer Layer of Skin, Hypodermis - Inner Layer of skin, Dermis - The Deep Fatty layer of skin, dermal papillae - the uppermost section of the dermis., Arches - Plain arch or tented arch Fingerprint, Loops - Radial loops or ulnar loops Fingerprint pattern, Whorls - Plain whorls, central pocket whorls, double loop, or accidental whorl., minutiae - the unique ridge patterns , Erythrocytes - Red blood cells, Leukocytes - White blood cells, Thrombocytes - Platelets, Presumptive Tests - Identify if the stain is blood., Confirmatory Tests - Identify that the blood is human., Blood typing - identifies the presence or absence of particular proteins embedded in the cell., Antigens - surface proteins on the RBC, Antibodies - proteins in the plasma to fight against other blood types., Blood Spatter - A grouping of blood stains constitutes a blood spatter pattern., Passive Drop - A circular drop of blood indicates a blood drop fell straight down, without force., DNA - (Deoxyribonucleic Acid) is the genetic material in our cells., Chromosomes - Where DNA is found, Double Helix - The shape of DNA, Gene - Small segment of DNA that codes for a trait., Allele - Different versions of a trait., nucleotides - The repeating subunit that composes DNA, mtDNA - DNA thats inherited from the maternal side, RFLP - the first type of DNA analysis to be used in a crime investigation., A primer - complementary nucleotides that find the beginning and the end of the STR region to be amplified, CODIS - FBI’s national DNA database of DNA profiles (STR’s) taken from convicted felons and DNA from crime scenes.,

Unit 2-4 Test

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