Forensic Glossary Flashcards
Impressions may be left by:
- item striking surface
- tool mark
- teeth or fingernail marks
- sole of shoe
- finger or palm prints
True
Chain of Evidence is the official record of exhibit collection, security and movement
True
Biological Material is:
- hair
- blood
- semen
- saliva
True
Physical Material is:
- paint flakes
- glass fragments
- firearm residue
- documents
- clothing fibres
- footwear impressions
True
Contamination occurs when:
- biological material is added to exhibit
- you wear the same gloves
- lack of boundaries
True
Persistence refers to the length of time forensic material is able to be detected following a crime
True
DNA deteriorates when packaging causes it to degrade and when exposed to the weather
True
Contamination = people entering and leaving
Deterioration = rain
Transfer = offender returning
Evidential Integrity = exhibit movement not recorded
True
How to collect a dry sample of DNA from a crime scene
Dried stains can be scraped or swabbed
Evidence is relevant even if it doesn’t prove anything
True
Contamination occurs when:
- exhibits not packaged correctly
- equipment not cleaned
- forensic material added to exhibit post incident
True
Transfer can occur between the victim and the offender when:
- only one vehicle used
- not separated at initial action
- offender present prior to incident
True
Material collected at a crime scene is contaminated when:
- equipment not cleaned
- searcher leaves trace
- people or animals enter
- exhibits repeatedly handled
True
Trace evidence can be seen by human eye, biological or physical and usually in fragments or small particles
True
The ‘Golden Hour’ is when evidential material is more readily available at the scene
True
