The skin on the hands and feet has layers called feet has layers - Epidermis,Dermis,Hypodermis, A fingerprint is an what type of evidence   - An example of individual evidence, Fingerprints have what on them that is unique  - ridge patterns, 3 main ridge patterns - loop,arch, whorl , what is considered good evidence - Usually a 10-12 point match, where is the deltas - A triangular region located near a loop is called a delta., types of fingerprints - Plastic,Patent,Latent, what is a plastic print - 3 dimensional prints on soft surfaces, what is a patent print - Visible prints formed when blood, dirt, ink, paint, etc. is transferred onto a surface., what is a latent print - Invisible, where can DNA be found - sweat, skin cells, hair,blood,saliva or body fluids left at a crime scene can be collected and its DNA analyzed., what is a PCR - makes many copies of STR regions on DNA, DNA is cut with what chemical scissors called - restriction enzymes, how long is VNTR - 10-100 base pairs long and larger DNA sample needed, composed of 3 parts: phosphate, deoxyribose sugar, and a nitrogen base. - nucleotides, allele - Different versions of a trait., DNA is found in - chromosomes in the nucleus of our cells, nuclear DNA - You inherit half of this DNA from your mother and half from your father, mtDNA - It is inherited from the mother only, Complementary Base Pairing - A-T and G-C, blood is what type of evidence - class evidence , Blood is a mixture of many components: - cells, inorganic substances (salts), enzymes, water, and proteins (antibodies)., Responsible for oxygen,No nucleus; no DNA - Erythrocytes (red blood cells), used in DNA profiling,Responsible for the immune system & produce antibodies - Leukocytes (white blood cells), Responsible for blood clotting,Platelets - Thrombocytes (platelets), proteins in the plasma to fight against other blood types. (Y-shaped) - Antibodies, surface proteins on the RBC like Blood type A has antigens for A - Antigens, Subdivided into drops, drip patterns, pools, and clots. - Passive Drop, A grouping of blood stains constitutes a blood spatter pattern. - Blood Spatter, Ex: Bloody hair swipes along an unblooded wall. - Swipes,

Forensic Science midterm

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