BCJ Forensic Science and Criminal Evidence

Question 1

What is the 'chain of custody' in forensic evidence?

Accepted Answer

The documented sequence of possession and handling of evidence

Answer

The ranking of detectives on a case

Answer

The order in which witnesses testify

Answer

The hierarchy of a crime organization

Question 2

Which forensic technique uses unique patterns in a person's DNA to link suspects to crime scenes?

Accepted Answer

DNA profiling (DNA fingerprinting)

Answer

Ballistic analysis

Answer

Toxicology

Answer

Latent fingerprint analysis

Question 3

What does Locard's Exchange Principle state?

Accepted Answer

Every contact leaves a trace

Answer

Every suspect has an alibi

Answer

Evidence must be photographed first

Answer

DNA is infallible

Question 4

What type of evidence is a witness's verbal account of what they observed?

Accepted Answer

Testimonial evidence

Answer

Physical evidence

Answer

Documentary evidence

Answer

Digital evidence

Question 5

Which fingerprint pattern is the most common among the general population?

Accepted Answer

Loop

Answer

Arch

Answer

Whorl

Answer

Composite

Question 6

What is the purpose of an autopsy in a homicide investigation?

Accepted Answer

To determine the cause and manner of death

Answer

To identify the weapon used

Answer

To collect DNA evidence only

Answer

To establish the time of the arrest