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Forensic Chapter 16: DNA Flashcards | StudBud
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Forensic Chapter 16: DNA
Forensic Chapter 16: DNA
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Questions
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Answers
1
What is the process of looking at multiple repeating points on all chromosomes at once?
Electrophoresis
Fragmentation
Replication
Multiplexing
2
Which type of DNA is passed down from a female?
Type A
Mitochondrial
Nuclear
Structural
3
What is the only exception to using airtight containers for biological materials?
Any liquid
All of the above
Drugs
Blood
4
Where is nuclear DNA located in the cytoplasm?
Nucleus
Lysosome
Ribosome
Mitochondria
5
DNA instructs the body to link what together into chains?
Nucleotide Acids
Polymerase
Genes
Amino Acids
6
What is the process of separating molecules based on their size and likelihood to move under an electrical potential?
Preservation
Multiplexing
PCR
Electrophoresis
7
DNA triples every cycle.
False
True
8
Which nitrogenous base is NOT found in DNA?
Uracil
Adenine
Thymine
Cytosine
9
What are the correct base pair ups?
A-G, C-T
A-C, T-G
A-T, C-G
10
For PCR, which DNA is easier to handle and withstand?
shorter strand
longer strand
11
Who discovered the structure of DNA (double helix/ twisted ladder)?
Watson and Crick
Alec Jeffreys
Watson
Crick
12
At a crime scene biological evidence/DNA must first be ______ and the __________.
Categorized, location documented
Categorized, evidence immediately collected
Photographed, evidence immediately collected
Photographed, location documented
13
The first scientifically accepted individualization of DNA: President Nixon’s famous Watergate scandal.
True
False
14
Forensic science community has standardized on ___ STRs for entry into DNA database ______.
25, CODIS
13, GCS
13, CODIS
3, GCMS
15
Airtight containers must be used for biological materials.
True
False
16
Each amino acid is represented by a sequence of __ bases.
2
3
4
8
17
Genes are the basic unit of heredity.
False
True
18
DNA has allowed biological samples be matched with unique individuals.
True
False
19
Not every STRs has to match up for it to be a DNA match.
True
False
20
Lab tests can usually tell when a sample is contaminated.
True
False
21
What test is used when the presence of blood is suspected but can’t be observed with the naked eye?
Complementary Identification
Elctrophoresis
Buccal swab
Luminol
22
DNA _________ are enzymes (proteins) that assemble new strands of DNA.
Amino Acids
Genes
Polymerase
Nucleotide Acids
23
The first step in the PCR process is to heat the DNA strands, but why?
So the double-stranded molecules stay tightly together
So double-stranded molecules separate completely
So the restriction enzymes can cut DNA
24
Where is mitochondrial DNA located in the cytoplasm?
Lysosome
Ribosome
Nucleus
Mitochondria
25
What is the complementary strand?
T-C-A-G
C-U-G-A
A-C-T-G
C-T-G-A
26
Nuclear DNA is easier to attain because there are thousands in just one cell.
True
False
27
How many known amino acids make all the thousands of proteins you need?
20
100
25
72
28
Sequence of amino acids gives proteins their specific shape and job.
True
False
29
What is the first step when acquiring DNA?
STRs
Replication
RFLP
DNA Typing
30
DNA is a nucleic acid composed of smaller building blocks called what?
Genes
Amino Acids
Polymerase
Nucleotides
31
How is DNA replicated?
RFLP
DNA Typing
PCR
STRs
32
In 1985, DNA typing had begun with the work of who?
Watson and Crick
Watson
Alec Jeffreys
Crick
33
If you were to stretch out a strand of DNA how long would it be?
8 ft
5 ft
25 ft
9 ft
34
Which suspects are NOT a match?
1 and 3
1 and 2
2 and 3
All the suspects
35
Reference samples for DNA must be collected from all victims and suspects, which is usually the buccal swab.
True
False
36
For RFLP, all humans have the same number of repeats, but not in the type of repeat.
False
True
37
RFLPs are cut directly out of the DNA helix with what?
Polymerase
Restriction Enzyme
Multiplexing
Fragments
38
What copies or replicates DNA strands if you only have a small amount.
Multiplexing
GCMS
Electrophoresis
PCR
39
What is the transferring of DNA via skin cells onto an object?
Nuclear DNA
Transfer DNA
Touch DNA
Mitochondrial DNA