midterm124 January 24, 2014
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1 1/24 Mid-term Review You have 10 minutes to walk around and check your answers to the mid-term review and then ask me any questions (the answers will also be posted on my Frontier website) Then get a whiteboard, marker, ruler, and calculator for your group
2 #1 Identify type of evidence(s) that applies Direct or Circumstantial Class or Individual Physical, Biological, Chemical Trace?
3 A. strand of hair with follicular tag B. video surveillance from gas station C. shards of glass from a hit & run accident D. Blood spatter on a suspect's shirt
4 A. strand of hair with follicular tag circumstantial, individual, biological, trace B. video surveillance from gas station direct C. shards of glass from a hit & run accident circumstantial, class, physical D. Blood spatter on a suspect's shirt circumstantial, individual, biological
5 #2 Match the person with the brief description on the next page A-John Purkinji B-Sir Edward Henry C-Karl Landsteiner D-John Dillinger E-Will West F-Juan Vucetich G-Marcello Malpighi H-Gus Winkler
6 1-burned off his fingerprints with acid 2-identified 9 different fingerprint patterns 3-discovered the A, B, and Rh antigens on red blood cells which made blood transfusions more successful 4-developed the 10-card for identification 5-first to use fingerprints to solve a murder investigation 6-examined and studied fingerprint ridge patterns under a microscope 7-had his a strip of his fingerprints surgically removed 8- criminal whose measurements started the switch from anthropometry to fingerprints for identification
7 A Purkinji-2 B Henry-4 C Landsteiner-3 D Dillinger-1 E West-8 F Vucetich-5 G Malpighi-6 H Winkler-7
8 #3 Identify as animal or human hair A B C
9 Idenitfy as animal or human A - animal B-animal C-human
10 #4 Using the hair on your reference sheet, determine the medullary index Write the formula and the answer on your board - also tell if it is animal or human
11 Medullary index = width of medulla width of hair = 0.6 cm 1.9 cm = 0.32 most likely human because no pattern in medulla
12 #5 Give 3 microscopic characteristics and 3 macroscopic characteristics of hair microscopic: type of cuticle pattern, damage to cuticle, presence of medulla, medulla pattern, pigment granule distribution macroscopic: length, color, texture (curly or straight), dye
13 #6 What is the difference between... A...direct transfer and secondary transfer B...FISH and IAFIS C...forgery and fraud D...AFIS and SAFIS
14 #6 A...direct transfer and secondary transfer one transfer two transfers carpet fiber from carpet fiber from car to shoe car to shoe to victim's house B...FISH and IAFIS Forensic Integrated Information Automated System for Fingerprint Handwriting Identification System
15 #6 What is the difference between... C...forgery and fraud falsify a document falsify a to deceive someone document for monetary gain D...AFIS and SAFIS nationwide statewide (worldwide)
16 #7 Organize from most common to least common A...arch, loop, whorl fingerprints B...A,B,AB,O blood types C...plastic, latent, patent fingerprints
17 #7 Organize from most common to least common A...loop (65%), whorl (30%), arch (5%) B...O (43%), A (42%), B (12%), AB (3%) C...latent (invisible), patent (visible), plastic (impression)
18 midterm124 January 24, 2014 #8 B Identify type of fingerprint: A C
19 A = whorl B = arch C = tented arch
20 #9 Using the paper chromatography example on your reference sheet, determine the Rf value for the ink spot shown Write out formula, numbers filled in, and final answer for Rf
21 #9 Write out formula, numbers filled in, and final answer for Rf Rf = distance of component color distance of solvent = 4.0 cm 6.3 cm = 0.63
22 #10 Using the fingerprint on your Reference Sheet, determine a ridge count
23 #10 Using the fingerprint on your Reference Sheet, determine a ridge count 12-13
24 #11 Identify the following techniques as destructive or non-destructive as an analysis for hair or fiber A - burn analysis B - light microscope C - fluorescent microscope D - comparison microscope E - neutron activation analysis
25 #11 A - burn analysis destructive; fibers B - light microscope non-destructive; both C - fluorescent microscope non-destructive; both D - comparison microscope non-destructive; both E - neutron activation analysis destructive; hair
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found identity rule out corroborate
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