Introduction to Forensic Science and Crime Scene Processing.

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Presentation transcript:

Introduction to Forensic Science and Crime Scene Processing

Forensic Science Disciplines Chemistry (Physical sciences) Drugs Trace Evidence Toxicology Biology DNA Serology Identification (Criminalistics) Fingerprints Firearms/Toolmarks Footwear/Tire Tracks Questioned Documents

Drug Chemistry Drug A natural or synthetic substance that is used to produce physiological or psychological effects in humans or animals Controlled substance The sale and distribution is tightly controlled Controlled Substances Act (Sched. I-V)

Trace Evidence – Found in small but measurable amounts Soil analysis Paint analysis Fiber analysis Glass analysis

Forensic Toxicology Study of “poisons” Drugs in blood and urine Blood and breath alcohol

Forensic Biology Forensic Serology Forensic Characterization of Semen DNA (CODIS)

Criminalistics Latent Prints Toolmarks Firearms Footwear Impressions Tire Tracks Questioned Documents

Basic Principles Forensic Science: “it is the application of science to those criminal and civil laws that are enforced by police agencies in a criminal justice system” Physical Evidence: “any object that can establish that a crime has been committed or can provide a link between a crime and its victim or between a crime and its perpetrator”