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FSC100 Exam review Questions with 100% correct detailed answers.
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FSC100 Exam review Questions with 100% correct detailed answers.
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FSC100 Exam review Questions with100% correct detailed answers.
'Scientific' methods under fire - ANSWER- - fire investigations
- bullet led evidence
- hair analysis
1984 - ANSWER- Jefferys developed and used the first DNA tests to be applied to a
criminal case
1st level of Fingerprint detail - ANSWER- Core and Delta (overall ridge)
- Orientation
- pattern type
- Focal points: core, delta, scars, creases
- identifications and exclusions cannot occur at this level
2 layers of volar skin - ANSWER- Dermal- thick foundation layer
Epidermal- thin outer layer of 15-20 layers of dead cells that are shed/abraded off and
replaced continuously from the basal layer between these layers
2 surface categories for fingerprint development - ANSWER- Porous (paper) and Non
Porous
2nd level of Fingerprint detail - ANSWER- minutiae and incipient ridges (ridge pat)
- type
- location
- direction
- spatial relationship
- continuous ridges
- identifications and exclusions can occur at this level
3 Sources of natural secretion (Fingerprint composition) - ANSWER- Eccrine* glands,
Sebaceous* glands, and Apocrine glands.
3 types of fingerprints at crime scene - ANSWER- Latent - hidden or concealed
Visible - blood, dirt, grime
Plastic - suspect pressed onto an item
3 types of offenses - ANSWER- Summary conviction, indictable, and those where the
crown may elect to proceed by summary conviction or idictment
3rd level of Fingerprint detail - ANSWER- Ridges edges and pores
,- size and shape of pores and ridges; end shape/angles, pores, edge shape, width
- identifications and exclusions decisions can be supports at this level of info
- dimensional attributes: pore shape, pore size, edge shape
4 bases of DNA - ANSWER- Adenine(A), Thymine(T), Guanine(G), Cytosine(C)`
4 damage effects to the friction ridge - ANSWER- Injury, Disease, Amputation and
Mutilation
5 basic characteristics for Fingerprint Ridge - ANSWER- Ridge ending, Bifurcation,
Ridge dot, Short Ridge, and Enclosure
RBRSE
8 recognizable Fingerprint patterns - ANSWER- 1. Arch
2. Tented Arch
3. Ulnar and Radial loops
4. Whorl
5. Double loop
6. Central pocket loop
7. Composite
8. Accidental
8 steps to help ensure against possible errors - ANSWER- - seek training and
participate in proficiency testing
- accept bias
- limit daily pressures
- remain objective
- seek to disprove
- limit outside influence
- use scientific protocols
- limit overconfidence
Accidental/Individual Characteristic - ANSWER- the result when something is randomly
added to or taken away from the original structure of the show or tire that either causes
or contributes to making that shoe or tire unique
- id purposes
- cuts, chips, tears, foreign materials or object, etc
acid yellow - ANSWER- fluorogenic reagent for blood impressions on dark nonporous
surfaces
- smart choice when faint blood impressions on a dark nonporous object requires
enhancement
Acid yellow - ANSWER- introduced in 2005 - a fluorogenic reagent for blood
impressions on dark nonporous surfaces.
- smart choice for enhancing faint blood impressions on dark nonporous objects
, Additional Criminal sources - ANSWER- firearms act, controlled drug and substance
act, youth criminal justice act, food and drug act, canada evidence act
adhesive substrates - ANSWER- self-adhesive labels, stamps and all sorts of tape offer
unique opportunities for finger development
Adversarial system - ANSWER- the Canadian judicial system base on British law
AFIS - ANSWER- Automated Fingerprint Identification System
Alphonse Bertillon - ANSWER- - bertillon system (or bertillonage and anthropometry)
- allowed to introduce Anthropometry on experimental basis in december 1882
Amido Black - ANSWER- a highly sensitive stain that gives excellent contrast and detail
on light to medium-colored surfaces.
- stains like coomassie blue and sudan black are equally effective
amido black - ANSWER- highly sensitive strain that gives excellent contrast and detail
on light to medium colored surfaces:
- easy to use and has been a favourite of forensic analyst
- similar strains (soomassie blue and sudan black) are equally effective
Attributes of friction skin: - ANSWER- - Sensitivity: more nerve endings than present in
skin from there areas of the body
- Thickness: must withstand heave daily workload of touching, gripping, lifting, and
twisting
- Purchase (grip): provides ability to grasp and prevent slippage
Atypical Techniques - ANSWER- in the case where many exhibits cannot be neatly
distinguished by their porous or nonporous substrates, a variety of chemicals and
sprays are employed in an attempt to render prints visible
Automated Fingerprint Identification System - ANSWER- - AFIS
- first developed byPrinttrak and then Rockwell INT. (adopted by FBI)
Avoiding confirmation bias - ANSWER- - complete knowledge of any science should
include knowledge about how mistakes can occur and how those mistakes can be
revealed and dealt with.
awareness - ANSWER- the key to avoiding bias and errors
Ballistics - ANSWER- identification of bullets and analysis to determine the condition of
the firearms (safety system, trigger pull force and general operability of the firearm)
Basic fingerprint patterns - ANSWER- arch 10%, loop 60%, and whorl 30%
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