10 Questions
Which forensic technique involves identifying individuals from their walk?
Gait analysis
What forensic method has been proven to be unreliable in many cases?
Microscopic hair comparison
Which of the following is NOT a method of identifying individuals using biometric techniques?
Bite mark comparison
What has led to the overturning of trials in forensic science?
Invalid testimony by forensic analysts
Which method involves identifying individuals from the content of their writings?
Writing style analysis
What was the main focus of Griffith's experiment?
Studying the possibility of creating a vaccine for pneumonia
What distinguished the type III-S from the type II-R strain of pneumococcus bacteria?
Presence of a polysaccharide capsule protecting from the host's immune system
What did Griffith's experiment demonstrate regarding the pneumococcus bacteria?
The ability to transfer genetic information through transformation
What did Fred Neufeld contribute to the study of pneumococcus bacteria?
Discovery of the three pneumococcal types and the quellung reaction
What was the significance of combining heat-killed III-S strain bacteria with live II-R strain bacteria?
The combination was able to kill its host
Study Notes
Forensic Identification
- Forensic identification is the application of forensic science and technology to identify specific objects from the trace evidence they leave, often at a crime scene or the scene of an accident.
Human Identification
- People can be identified by their fingerprints based on the philosophy of friction ridge identification.
- Friction ridge identification is established through the agreement of friction ridge formations, in sequence, having sufficient uniqueness to individualize.
- Four premises of friction ridge identification:
- Friction ridges develop on the fetus in their definitive form prior to birth.
- Friction ridges are persistent throughout life except for permanent scarring, disease, or decomposition after death.
- Friction ridge paths and the details in small areas of friction ridges are unique and never repeated.
- Friction ridge patterns vary within limits which allow for classification.
Test your knowledge of forensic identification with this quiz. Explore topics such as fingerprint analysis, DNA profiling, and other methods used to identify individuals from trace evidence left at crime scenes.
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