Paxton Patterson Criminalistics
Questions and Answers Latest Version
(2024/2025) Already Passed
What is criminalistics?
✔✔Criminalistics is the application of science to solve crimes, using techniques such as forensic
analysis of evidence, crime scene investigation, and the study of physical evidence to aid in legal
proceedings.
How does forensic evidence help in criminal investigations?
✔✔Forensic evidence provides objective, scientifically analyzed information that can confirm or
disprove elements of a case, identify suspects, and establish timelines, helping investigators
solve crimes more effectively.
What types of physical evidence are commonly found at crime scenes?
✔✔Common types of physical evidence include fingerprints, hair, fibers, blood, shoeprints,
firearms, tools, and DNA, all of which can provide critical information about the crime or the
suspect.
Why is it important to properly collect and preserve physical evidence?
1
,✔✔Proper collection and preservation of evidence prevent contamination, degradation, or loss of
vital information that could affect the outcome of the investigation or trial.
What role does forensic toxicology play in criminalistics?
✔✔Forensic toxicology involves the analysis of bodily fluids, tissues, and other substances to
detect drugs, alcohol, poisons, or other toxic substances, helping to determine the cause of death
or impairment in criminal investigations.
How do criminalists determine the time of death?
✔✔Criminalists use various techniques, including body temperature, rigor mortis, livor mortis,
and insect activity, to estimate the time of death and help investigators establish timelines in
death investigations.
What is the significance of fingerprint analysis in criminalistics?
✔✔Fingerprint analysis is a key method for identifying individuals at crime scenes, as
fingerprints are unique to each person and can provide definitive evidence linking a suspect to a
crime.
How is DNA profiling used in criminalistics?
2
, ✔✔DNA profiling allows forensic experts to match biological evidence, such as blood or hair, to
a specific individual, helping to establish identity and link suspects to crimes or exclude them
from suspicion.
What is the process of analyzing blood spatter at a crime scene?
✔✔Blood spatter analysis involves studying the size, shape, and pattern of blood droplets to
determine the positions of the victim and assailant, as well as the nature of the attack or the
movement during the crime.
How do forensic scientists analyze firearms and ammunition in criminalistics?
✔✔Forensic scientists examine firearms and ammunition to match bullets or cartridge casings
found at a crime scene to specific weapons, helping to identify the weapon used and potentially
link it to a suspect.
Why is chain of custody important in criminalistics?
✔✔Chain of custody is crucial to ensure that evidence is handled, stored, and transferred in a
manner that maintains its integrity and prevents contamination, tampering, or misidentification
during the investigation or trial.
How does forensic odontology contribute to criminalistics?
3
Questions and Answers Latest Version
(2024/2025) Already Passed
What is criminalistics?
✔✔Criminalistics is the application of science to solve crimes, using techniques such as forensic
analysis of evidence, crime scene investigation, and the study of physical evidence to aid in legal
proceedings.
How does forensic evidence help in criminal investigations?
✔✔Forensic evidence provides objective, scientifically analyzed information that can confirm or
disprove elements of a case, identify suspects, and establish timelines, helping investigators
solve crimes more effectively.
What types of physical evidence are commonly found at crime scenes?
✔✔Common types of physical evidence include fingerprints, hair, fibers, blood, shoeprints,
firearms, tools, and DNA, all of which can provide critical information about the crime or the
suspect.
Why is it important to properly collect and preserve physical evidence?
1
,✔✔Proper collection and preservation of evidence prevent contamination, degradation, or loss of
vital information that could affect the outcome of the investigation or trial.
What role does forensic toxicology play in criminalistics?
✔✔Forensic toxicology involves the analysis of bodily fluids, tissues, and other substances to
detect drugs, alcohol, poisons, or other toxic substances, helping to determine the cause of death
or impairment in criminal investigations.
How do criminalists determine the time of death?
✔✔Criminalists use various techniques, including body temperature, rigor mortis, livor mortis,
and insect activity, to estimate the time of death and help investigators establish timelines in
death investigations.
What is the significance of fingerprint analysis in criminalistics?
✔✔Fingerprint analysis is a key method for identifying individuals at crime scenes, as
fingerprints are unique to each person and can provide definitive evidence linking a suspect to a
crime.
How is DNA profiling used in criminalistics?
2
, ✔✔DNA profiling allows forensic experts to match biological evidence, such as blood or hair, to
a specific individual, helping to establish identity and link suspects to crimes or exclude them
from suspicion.
What is the process of analyzing blood spatter at a crime scene?
✔✔Blood spatter analysis involves studying the size, shape, and pattern of blood droplets to
determine the positions of the victim and assailant, as well as the nature of the attack or the
movement during the crime.
How do forensic scientists analyze firearms and ammunition in criminalistics?
✔✔Forensic scientists examine firearms and ammunition to match bullets or cartridge casings
found at a crime scene to specific weapons, helping to identify the weapon used and potentially
link it to a suspect.
Why is chain of custody important in criminalistics?
✔✔Chain of custody is crucial to ensure that evidence is handled, stored, and transferred in a
manner that maintains its integrity and prevents contamination, tampering, or misidentification
during the investigation or trial.
How does forensic odontology contribute to criminalistics?
3
