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Forensics Test.
Please note that all images are stock images. None of the people featured have committed any crimes.
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After 4 rounds of PCR, how many strands of DNA will be produced?
1 point
8
16
32
144
256
Clear selection
Calculate the retention factor of this A taken from the crime scene. Include the correct units. (Solute is water, medium is nonpolar).
1 point
Your answer
Based on the rf factor, is the mark from a Sharpie or from a Crayola marker? Explain.
1 point
Your answer
The following fiber was found on the crime scene. Who is the murderer?
0 points
Rob
Kayla
John
Rebecca
Clear selection
Name A. Then name B
1 point
Your answer
Which of these insects is usually last to appear on a corpse?
1 point
flesh fly
beetle
blowfly
Clear selection
Estimate angle of impact. Indicate directionality of impact
2 points
Your answer
Give the formula, name the compound, calculate formula weight.
3 points
Your answer
What is the angle of impact of these blood drops? explain.
3 points
Your answer
Identify the type of fiber.
0 points
Your answer
How does the appearance of blood spatter change as the velocity is varied?
2 points
Your answer
Balance the following net ionic chemical reaction. Please indicate if no reaction occurs. Calcium chloride and silver nitrate.
1 point
Your answer
If the angle of incidence was 45 degrees, and the angle of refraction was about 28.126 degrees, determine the type of glass that was most likely found on the crime scene
1 point
headlight glass
Ophthalmic lense
television glass
glass bottle
Clear selection
Identify the following fingerprint pattern
1 point
Your answer
What kind of animal did this come from?
1 point
Your answer
Identify the following fingerprint pattern
0 points
Your answer
Please explain how you can tell which puncture occurred first. Use the proper vocabulary terms.
3 points
Your answer
A dog was found dead on the side of the road. There are hardened blowfly cocoons on the corpse. How long ago did the murder happen?
1 point
1.5 weeks ago
1 month ago
1 day ago
couple hours ago
Clear selection
What kind of animal did this come from?
1 point
Your answer
What kind of animal did this come from?
1 point
Your answer
The results of the burn test are listed. What type of plastic was burned? The flame is slow-burning, and blue with yellow tips. Plastic drips, and has sweet odor. Floats.
1 point
Your answer
Explain how fingerprints are developed using Ninhydrin.
2 points
Your answer
Explain what an island is.
1 point
Your answer
Name the following basic and composite ridge characteristics (minutiae)
3 points
Your answer
Which layer of the skin has no blood vessels?
1 point
Your answer
Explain the molecular difference between LDPE and HDPE and how this influences theirphysical properties
3 points
Your answer
Name the monomer in LDPE/HDPE plastic
1 point
Your answer
Which plastic burns green?
1 point
Your answer
A sample of a clear plastic that polymerizes by condensation is found on a crime scene. Who is most implicated by this evidence?
0 points
Robert
Timothy
Natalie
Anne
Clear selection
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