Introduction to Evidence Collection
True of False?
Allowing family or friends of a victim onto a crime scene can contaminate evidence.
True
True or False?
Understanding the complexities of evidence allows crime scene investigators to make decisions about what evidence is necessary to collect.
True
True of False?
Packaging evidence correctly is an essential feature of preventing evidence contamination.
True
How should blood pools found on a crime scene be collected?
What is trace evidence?
Small amounts of evidence including hair, fibers, glass and paint
True or False?
Law enforcement officers must apply to an unbiased jury for a warrant.
False
We apply to a judge/magistrate not a jury
True of False?
Forensic scientists are primarily concerned with collecting testimonial evidence
They focus on collection of evidence DNA/Fingerprints etc.
True of False?
Exposure to blood-borne pathogens is a concern for crime scene investigators.
True
What is the preferred method for collecting an object that has dried blood on it that was found on a crime scene?
Collecting the entire object containing the presence of dried blood
What is NOT something analysis of hair collected at the scene of the crime can identify?
DNA specific to the individual
What is the primary objective of finding physical evidence?
Determining what actually occurred on the crime scene
What is testimonial evidence?
Consists of eyewitness accounts, victim statements and expert testimony
Which of the following is NOT a way to ensure evidence has not been tampered with or contaminated?
A. Using personal protective equipment
B. Packaging evidence correctly
C. Maintaining the chain of custody
D. Searching a scene thoroughly
D. Searching a scene thoroughly
What describes a swab that is from the inside of an individual's mouth and is used to compare DNA found on a crime scene?
Buccal Swab
How many individual hairs should investigators collect for samples?
50 to 100
The results of physical evidence analysis alone could NOT do what?
Convict a suspect.
What is Documentary evidence?
Consists of documents, audio, video or other digital information like text messages or social media posts
What is the best method for crime scene investigators to use to avoid spreading trace amounts of DNA throughout the crime scene?
Which of the following is a true statement?
A. Because of DNA identification, biological evidence is less significant
B. Biological samples can expose law enforcement samples to pathogens
C. All biological samples should be handled with care when not using personal protective equipment
D. Dried blood does not contain DNA
B. Biological samples can expose law enforcement samples to pathogens
Which of the following is NOT something investigators would be able to identify from analysis on a fiber found on a crime scene?
A. Match between two samples
B. DNA from the individual who touched the fiber
C. Origin of fiber
D. Material fiber is made of
B. DNA from the individual who touched the fiber
When must a law enforcement officer have in order to obtain a warrant?
Probable Cause
What is Circumstantial Evidence?
Evidence which implies a fact but does not prove anything
True or False?
After usage, all personal protective equipment should be disposed of in the nearest trash can.
False
it can contain biohazard items so it should be thrown in a secure biohazard container.
Which of the following is NOT an essential type of biological evidence?
A. Blood
B. Sexual evidence
C. Saliva
D. Dental remains
D. Dental remains
What can fibers found on a crime scene prove?
Contact between two individuals or an individual and an object.