The Crime Scene Fingerprints/ Impression Trace Evidence Toxicology MIXED UP

Evidence that can be associated with a group and never a single source 1-1

Class evidence

Statement of where a suspect was at the time of the crime. 1-2

alibi

The oldest forensic laboratory in the United States 1-3

LAPD

1-4 What are 4 units of the crime lab?

Biology, Physical Science, Firearms, Photography, Documents (toxicology)

1-5 What is an example of a control and why are controls necessary for crime scenes?

An example would be a sample of blood taken from a crime scene, controls are necessary to compare crime scene evidence to suspect data.

2-1 What are the 3 patterns of fingerprints?

Arch, Loop, Whorl

2-2 Of the three patterns of fingerprints, which is the most common?

Loops

2-3 What percentage of the population has arch fingerprints?

5%

2-4 Name 1 of the 3 principles of fingerprints

Everyone has individual fingerprints, easily classfied, never change

2-5 What are the three types of fingerprints?

Visible, Latent, Plastic

3-1 Restate the Locard Exchange Principle in your own words.

Whereever you go you leave something behind.

3-2 Which DNA base pairs with Adenine: Guanine, cytosine or thymine?

Thymine

3-3 A type of fibrous protein that makes up the majority of the cortex of hair

keratin

3-4 Look at the board, at what angle was that blood droplet made?

90 degrees

3-5 Draw on the board a parent drop, spine and satellite.

See Board

4-1 What color does the Van Urk test turn in the presence of LSD?

Purple

4-2 What type of drug increases the feelings of energy or alertness?

Stimulant

4-3 What is the difference between physical and psychological dependence?

Physical dependence occurs when your body goes through withdrawals (only body is dependent) psychological is when you make excuses for why you have to have the drug

4-4 What is the difference between qualitative and quantitative data?

Qualitative tells you what drugs you have, quantitative tells you how much you have.

4-5 The Marquis color test is a screening test for which drug?

Heroin

5-1 The most heavily abused drug in the Western world

Alcohol

5-2 Who is John Dillinger?

20’s gangster who removed his fingerprints in an attempt to escape the law

5-3 An elderly woman dies after being kept from receiving proper health care by her children. The manner of her death would be:

Accident

5-4 What are the 3 types of evidence?

Physical, trace, testimonial

5-5 Is blood class or individual evidence?

Both