

Earl Washington Case
Presentation
•
Biology
•
11th Grade - University
•
Practice Problem
•
Medium
Standards-aligned
Cheryl Graves
Used 12+ times
FREE Resource
34 Slides • 21 Questions
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Multiple Select
Was Earl Washington guilty of raping and murdering Rebecca Williams?
yes
no
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Multiple Select
In your Opinion: Did the criminal justice system work as it should have?
yes
no
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Open Ended
What biological specimens would yield DNA at a crime scene? List examples!
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18
Multiple Choice
Which of the following materials are not needed to perform a PCR reaction?
DNA polymerase
RNA template
DNA template
free nucleotides
primers
19
Multiple Choice
You set up a PCR reaction using a human DNA polymerase enzyme and the other required materials. What results will you observe after running the PCR for 30 cycles?
The PCR will produce > 1 billion copies of DNA
The PCR will produce > 1 million copies of DNA
The PCR will produce only one copy of DNA
The PCR will not produce any copies of DNA
20
Multiple Choice
21
Multiple Choice
22
Multiple Choice
23
Multiple Choice
The first step in PCR is
Primer annealing
Denaturation
Primer extension
None of these
24
Multiple Choice
What is the denaturation step?
mutating RNA polymerase
Cooling DNA to allow primers to form
separating DNA helix in a cold environment
separating DNA helix with using heat
25
Match
Match the following:
Denaturing
Annealing
Extension
Separation of DNA strands
Binding of primers
DNA synthesis
Separation of DNA strands
Binding of primers
DNA synthesis
26
Drag and Drop
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Multiple Choice
If DNA was loaded at the top of a gel but the positive and negative poles were accidentally reversed, what would happen?
All of the DNA molecules would move towards the top of the gel.
All of the DNA molecules would move towards the bottom of the gel.
Small DNA molecules would move towards the top of the gel and large DNA molecules would move towards the bottom of the gel.
36
Multiple Choice
In preparation for an electrophoresis procedure, enzymes are added to DNA in order to
convert the DNA into gel
cut the DNA into fragments
change the color of the DNA
produce longer sections of DNA
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Drag and Drop
38
Match
Match the following:
PCR
Gel electrophoresis
DNA fingerprint
Bacterial transformation
amplification of a DNA or protein sample for analysis
used to separate fragments of DNA or protein
pattern of DNA fragments used to identify an individual
taking up foreign DNA by a bacterium
amplification of a DNA or protein sample for analysis
used to separate fragments of DNA or protein
pattern of DNA fragments used to identify an individual
taking up foreign DNA by a bacterium
39
Multiple Choice
A student performed a gel electrophoresis experiment. The results are represented in the diagram
below. Compared to the fragments at the top of the gel, the fragments at the lower end are
larger, and move slower
larger, and move faster
smaller, and move faster
smaller, and move slower
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Multiple Choice
41
Hotspot
The sample on the left comes from a crime scene. The three samples on the right came from suspects. Click on the DNA fingerprint of the suspect that matches the sample.
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46
Multiple Choice
A single STR may differ between two unrelated people by…
sequence
length
location in the genome
sequence and length
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Multiple Choice
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