BCJ Forensic Science and Criminal Evidence 3

Question 1

Which federal database allows law enforcement to share and search DNA profiles nationally?

Accepted Answer

CODIS (Combined DNA Index System)

Answer

CODIS is the FBI's national DNA database system that stores DNA profiles from convicted offenders, crime scenes, and missing persons for law enforcement comparison.

Question 2

What is forensic toxicology primarily concerned with?

Accepted Answer

Detecting and measuring drugs, poisons, and chemicals in biological samples

Answer

Forensic toxicology involves the detection and quantification of drugs, alcohol, poisons, and other chemicals in biological specimens for legal purposes.

Question 3

What is the significance of 'trace evidence' in criminal investigations?

Accepted Answer

Microscopic or small-scale material transferred between crime scene, victim, and suspect

Answer

Trace evidence includes small materials like hair, fibers, glass, or soil that are transferred between persons or locations and can link suspects to crime scenes.

Question 4

Which forensic discipline analyzes handwriting to determine authorship of documents?

Accepted Answer

Questioned document examination

Answer

Questioned document examination involves the scientific analysis of handwriting, signatures, typewriting, and other document features to determine authenticity or authorship.

Question 5

What does 'postmortem lividity' (livor mortis) indicate in a death investigation?

Accepted Answer

The position of the body after death based on blood pooling

Answer

Livor mortis is the purplish discoloration of the skin caused by the settling of blood after death, indicating the position in which the body came to rest.

BCJ - Bachelor of Criminal Justice Practice Test

BCJ - Bachelor of Criminal Justice Practice Test

BCJ Forensic Science and Criminal Evidence 3