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Which one is not a layer of the hair shaft?
cuticle
follicle
cortex
medulla
Which feature of hair is MOST important in making species identification?
scale pattern
bulb size
follicle shape
shaft lenghth
A cast of a hair surface can be made by using...
paint
clear nail polish
iodine
wax
Pigment granules that impart hair with color are found in the...
cortex
medulla
cuticle
The central canal running through many hairs is known as the...
medulla
cortex
root
shaft
The medullary index of human hair is ______the medullary index for most other animals.
Equal to
The same as
Greater than
Less than
Medullae may be classified as being..
all of the above
continuous
interrupted or absent
fragmented
If hair does not have DNA, an expert witness is on best scientific footing when stating that...
the given hair comes from a specific person
his examination reveals that the hair is that of a male
the hair in question comes from a 21-year old
a suspect hair comes from a particular animal species
Determining whether a hair sample originated from male or female, the MOST important factor is:
whether the hair was dyed
whether the hair is bleached
the results of DNA analysis performed on the root structure
the length of the hair
The most prevalent natural plant fiber is...
hemp
cotton
silk
linen
A fiber's microscopic appearance being ribbon-like in shape with twists at irregular intervals:
nylon
polyester
acrylic
cotton
Which is NOT a synthetic fiber
All of them are synthetic
Polyester
Rayon
Acrylic
In the collection of fiber evidence, great care should be taken to..
package all items together
shake off all garments to be sent for examination
vacuum each item
avoid cross-contamination of evidence
The rate of human hair growth per month is
1 cm
1 inch
1 ml
2 inches
Before the 20th century, all fibers were
natural
chemically treated
derived
synthtic
The portion of the hair containing its scales is best characterized by
the cuticle
the root
the follicle
the cortex
