What is the first thing you should do at a crime scene?
medical assistance
100
What type of evidence is wet foot prints?
transient
100
what is the most common type of print?
whorl
100
you find 4 cast-offs how many times was the victim struck?
5 times
100
What is an accelerant
substance used to speed up a fire such as gasoline
200
What is locard's exchange principle?
every contact leaves a trace
200
What are the individual and class characteristics from a shoe print?
class - size, shoe type
individual - wear patterns, chips
200
what type of print has no deltas?
arch
200
If you find blood stains on the ground and determine the area of convergence, what does this tell you?
where the victim was standing
200
what is the center structure of your hair? sometimes it is absent or broken
medulla
300
What search pattern splits up the crime scene for each investigator to search a different area?
Quadrant
300
What is the best way to package a blood soaked shirt?
let it dry and then use a paper bag
300
porous or nonporous? paper and gun
paper - porous
gun - nonporous
300
55. Which of the following is an example of a bloodstain which could contain individual characteristics:
a. Passive drops coming from an individual’s finger and falling to the ground
b. Transfer stains showing the imprint of the sole of a shoe
c. High velocity impact stain from a 44 magnum
d. Pooling that results from a person bleeding on a unique rug
b. Transfer stains showing the imprint of the sole of a shoe
300
What occurs at the first temperature change of 95 degrees during PCR?
DNA is denatured or unzipped. the two strands separate
400
How do you photograph a body vs a gun differently?
photograph under the body
400
How do you calculate the rf value from a TLC test?
distance compound traveled/distance solvent front traveled
400
what powder would you use on a gun that has a black barrel and white grip?
bichromatic
400
What is the point of origin if the angle of impact is 45 degrees and area of convergence is 3 feet?
3 feet
400
What substance for the victim's body actually wouldn't have any DNA?
red blood cells
500
What are 4 things that should be in the legend of a sketch?
north, scale?, date, location, case number, evidence key
500
What is the qualitative and quantitative information from a TLC test?
qual: color of ink
quan: number of components, rF value
500
what technique besides powders could you use on a gun?
superglue fuming
500
What is the primary function of erythrocytes (rbc's)
carry gasses, oxygen and carbon dioxide
500
What is an STR and how do they vary between people?
short tandem repeat, and the number of repeats is different