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37 Cards in this Set
- Front
- Back
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In the modified Henry Fingerprint system, an ulnar loop on the right middle finger gets assigned a value of
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0
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The secretions of __________ glands can be detected by the ninhydrin reagant
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sweat
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At a crime scene an example of a visible print might be
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print found in blood
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A secretor is an individual who
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release blood typing antigens in their body fluids
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The National DNA Database contains_________from_________________.
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DNA, convicted criminals
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Forensic investigators would search for a cold hit match when__________________
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they have DNA evidence from a crime scene
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For positive identification,_________ fingerprint points must match out of a total of ______
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8-16, 150
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To develop prints on a mirror surface, one should use________
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gray powder
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Two methods for developing prints on absorbent surfaces are________ and _____________.
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Ninhydrin, Iodine Fuming
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Two methods for developing prints on non-absorbent surfaces are________and_________.
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powders, cyanoacrylate
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_______glands are associated with hair follicles.
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sabacceous
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The most definitive way to demonstrate that a sexual assualt has taken place is to identify the presence of ________
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spermatozoa
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What are the four components of seminal fluid?
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citric acid, fructose, acid phosphatase, choline
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A colormetric test for the enzyme_______ produced by the ________ can be used as a presumptive test for seminal fluid.
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acid phosphatase, prostate gland
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The Florence Test is a microcrystalline test for___, which provides presumptive evidence of seminal fluid.
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choline
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In addition to blood, two body fluids that can be used for blood typing are _______ and ______.
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seminal stains, saliva
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A fingerprint left in a pool of fresh blood would be known as a ______ print.
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visible
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The distinguishing characteristics of a central pocket loop
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2 deltas
360 degree cirlce |
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The most common fingerprint patterns are of the _____ type.
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loops
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The fingerprint pattern known as _____ do not have deltas.
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arches
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The 4 building blocks of DNA are
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adenylic acid
Guanylic acid Thynylic acid Cytonylic acid |
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Define Base Pair
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bonding of the bases
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Humans have __ pairs of chromosomes, which together contain __ (# of building blocks)
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23, 4
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Define gene
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base sequence that codes for protein
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Define allele
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alternate form of a gene
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In a gel electrophoretogram of DNA heterozygosity at a forensic locus is indicated by ________.
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2 peaks
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The amount of DNA needed for an STR analysis is _______.
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.02ng
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Define PCR Primer
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20-30 bases long, pick out specific sequence.
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What happens in PCR cycle?
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94 C strand seperation-breaks hydrogen bonds
60 C cooling of primers 72 C extension of primers |
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A plain whorl is characterized by
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a line being drawn between the 2 deltas that touch the 360 circle
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The secretions of ____ glands can be detected by the ninhydrin reagant because ninhydrin reacts with _____.
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sweat, amino acids
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Define Ulnar Loop
Radial Loop |
Ulnar-loop opens toward little finger
Radial loop opens toward thumb |
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The human genome contains approx. ______ coding genes. The % of the human genome that does not code is ________.
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30,000, 98.5
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Secretors___________. They make up _____ % of the population.
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release blood typing antigens in their body fluids, 85
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Define CODIS
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Combined DNA Index System
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Define STR Multiplexing
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allows several STR loci to be amplified in the same tube
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Define allelic ladder
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contains every known allele for each forensic locus
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