Basic Crime Lab Services Aim: What are the 5 basic services a crime laboratory can support? HW: Finish Apples to Apples Activity

HINT: The underlined letters are the first letters of the words. Do Now: Unscramble each set of letters to reveal a forensic science term. 1. lobod 2. micer encse 3. srnoa 4. redrum 5. tnirpooft HINT: The underlined letters are the first letters of the words.

The answers are ... 1. lobod BLOOD 2. micer encse 3. srnoa CRIME SCENE 4. redrum 5. tnirpooft BLOOD CRIME SCENE ARSON MURDER FOOTPRINT

Crime Labs Most Crime Labs created for Drug Analysis Only Diversity and Quality of Services Vary Greatly (Because of Money!) “Unit” Constitutes a “FULL SERVICE” Crime Lab

5 Basic Crime Lab Services Physical Science Unit Biology Unit Firearms Unit Document Examination Unit Photography Unit

Physical Science Unit Uses Chemistry, Physics, and Geology to identify and Compare Crime Scene Evidence What are some items this unit would study? drugs, glass, paint, explosives, soil, etc…

Examines Blood & Other Body Fluids Compares Hairs & Fibers Biology Unit Examines Blood & Other Body Fluids DNA Profiles Compares Hairs & Fibers Examines Plants/Wood

Questions??? What do you think is the most accurate biological piece of evidence found at a crime scene? DNA What do you think are the 2 most common bodily fluids found at a crime scene? Blood and Semen

Firearms Unit (Ballistics) Examines firearms, discharged bullets, cartridge cases, and shotgun shells Searches clothing for gunpowder residue Determines distance a weapon was fired from

Document Examination Unit Studies Handwriting or typewriting Analyzes paper & Ink Examines Indented Writings & Burned Documents Forgeries, Ransoms, & Kidnappings

CRAZY CRIMINALS According to Point of View, a magazine published by the Alameda county District Attorney’s office, a guy walked into an Oakland bank and handed the teller a note reading, “this is a stikkup. Hand over all yer money fast.” Guessing from this that the guy was no rocket scientist, the teller replied, “I’ll hand over the cash as long as you sign for it. It’s a bank policy that all robbers have to sign for their money.” The guy thought this over, then said “Uh, I guess that’s OK.” He signed his full name and address. That’s where the cops found him a few hours later.

Photography Unit Examines & records physical evidence Only black & white photos are shown to jurors…Why?

Video Clip ..\Unit 1 movies\Photography.wmv

Optional Services Toxicology Unit  poisons/drugs Latent Fingerprint Unit Polygraph Unit  lie detector Voiceprint Analysis Unit Evidence Collection Unit  CSI

Summary Most crime labs are created for..? Name and Describe the 5 Basic Crime Lab Services? Name ONE Optional Crime Lab Service