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FSC100 Final Exam – Questions & Accurate Answers
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FSC100 Final Exam – Questions & Accurate Answers
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FSC100 Final Exam – Questions & Accurate AnswersWhat is evidence and what is it used for? Right Ans - Anything that can help
prove or disprove a point in question
-used to establish linages and leads
-if a crime was committed
-who committed the crime
What are the types of evidence Right Ans - Physical, Testimonial, and
Transient
what establishes the credibility of evidence Right Ans - -Amount of
evidence
Type of evidence - Testimonial is unreliable
-quality of evidence
Presumptive match Right Ans - or test
-belongs to a group of items or a class of particular items
-for example, screening an object for an opioid
-can include many things
Positive match Right Ans - or test
-mapping to one particular item
-excluding everything else
-for example, screening for a particular opioid-like heroine
what is another word for positive match Right Ans - confirmatory
questioned source Right Ans - -evidence that has an unknown authour or
origin
-type of document with unknown or disputed authour
known source Right Ans - --item has a known origin
-Handwriting, billets, fingerprints, DNA
in the case of evidence collection and comparing, what are known and
questioned sources used for Right Ans - -questioned source is the collected
evidence that we do not know the origin of
,-the known source is used as the control sample, as a comparative sample this
can include DNA, fingerprints, billets, and handwriting
inferotemporal cortex Right Ans - The cortex of the inferior temporal lobe,
in which is located an area of secondary visual cortex that is involved in object
recognition
-takes in info like sight, smell, taste and connects it to something we recognize
Class Characteristics Right Ans - Properties of evidence that can be
associated only with a group and never with a single source.
-cannot objectively say that a specific item was used for fibres
-based on designs by manufacturer
-can be like a questioned source but not uniquely identifiable with that source
-The colour and size of shoes
Identifying Characteristics Right Ans - or individual characteristics are
distinct differences in the physical or biological evidence that allow it to be
associated with a single source with a high degree of certainty.
what are some physical evidences that can be individualized? Right Ans -
fingerprints, tire impressions, toolmarks, footwear, bullet and casing, tire
impressions, and handwriting
T OR F not all evidence has class characteristics Right Ans - FALSE, all
evidence has class characteristics
T OR F evidence may or may not have identifying characteristics Right Ans
-T
what are individual characteristics a result of? Right Ans - defect and
features that allow matching to a single item with a high degree of probability
Serology Right Ans - The study of reactions between antibodies and
antigens, blood
-The analysis of the properties and effects of serums (blood, semen, saliva,
sweat, or fecal matter)
, when do fingerprints ridges form? Right Ans - form during the third month
of fetal development and never change until the final disintegration of the
body after death except to enlarge during growth or if subjected to disease or
mutilation-used to improve grip
Dactyloscopy Right Ans - the study of fingerprints. the word is drived from
the Greek daktulos, meaning finger.
what other body parts have unique ridge patterns Right Ans - palms, feet
soles, toes, ear, and lip impressions
Ridges Right Ans - hills, contain pores and openings for sweat glands
-coded by genetics
-are different due to envrionmental factors in the womb such as fluid passage,
nutrition
furrows Right Ans - walleys
what causes the reproduction of ridges onto surfaces Right Ans - sweats
and oils on fingers (in ridges) get transferred to a surface
ridges become hardwired in what layer of the skin Right Ans - dermis layer
what are the three classes of fingerprints ridge patterns Right Ans - whorls,
loops, and arches
what percentages of the pop have
whorls
loops
arches Right Ans - 30-35 have whorls
60-65 have loops
5 percent have arches
what are the types of loops Right Ans - ulna (moving towards pinky)
radial (moving towards thumb)
what occurs after a fingerprint ridge is classified into a group Right Ans - it
is examined for minutiae
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