WorksheetsHair Analysis and Forensic Science Quiz
Total questions: 15
Worksheet time: 11mins
True or False: The shaft of the hair is considered class evidence in a trial.
True
False
True or False: Hair is composed of a protein called keratin.
True
False
True or False: All hairs on the head of a person are identical.
True
False
True or False: The cortex of the hair contains pigment (color).
True
False
The hair shaft is composed of the cuticle, cortex and____.
Medulla
Root
Crown
Follicle
What part of the hair must be present in order to conduct a full DNA analysis?
Medulla
Root
Follicle
Crown
Why is hair mostly considered class evidence?
Because its characteristics can be linked to a certain class of people.
Without the follicle, it can’t be linked to an individual.
Hair can only indicate a racial group/sex/age; therefore, can only be matched to a class of individuals.
All of the above
Which famous political leader’s hair analysis determined that he died from a poison called arsenic?
Hitler
Napoleon
Alexander the Great
Stalin
What is the medullary index of the hair shown below? The width of the medulla is 1 micron and the width of the hair shaft is 3 microns.
3
0.5
0.3
0.75
What is the primary function of the cuticle in hair?
To provide color
To protect the inner layers
To store DNA
To determine hair texture
True or False: The medulla is always present in human hair.
True
False
Part H is the (a)
Arjun is studying forensic science and is analyzing a strand of hair found at a crime scene. What is the medullary index for a human hair?
generally less than 1/3
generally equal to 1/3
generally more than 1/3
generally greater than 1/2
The body of a woman was found in the woods. Some hair fibers found on the body were sent to the crime lab for analysis. The ends of the hair attached to the body were gray, but showed that it had been dyed. The distance from the root of the hair to the beginning of the dyed area measured 8 mm. Investigators determined that the victim’s hair had last been dyed on August 1, 2004. Assuming the hair grows at a rate of 0.44 mm per day, approximately what date did the woman die?
August 18, 2004
August 4, 2004
August 31, 2004
August 25, 2004
