Forensics Hair and Fibers

Front

The protein that makes up hair is called _____

Back

keratin

Front

The deepest layer of hair (compared to the lead of a pencil) is the ___

Back

medulla

Front

The middle layer of a hair (compared to the wood of a pencil) is the __

Back

cortex

Front

The outside layer of a hair (compared to the ink on a pencil) is the ___

Back

cuticle

Front

Which of the following types of medullas are NOT commonly found in human hair? Options: continuous, absent, interrupted, fragmented

Back

continuous

Front

To determine the medullary index, you would ______.

Back

measure the diameter of the medulla and divide it by the diameter of the hair

Front

Where is Nuclear DNA found in the hair? Options: root, hair shaft, tip, medulla

Back

root

Front

Hair is helpful in solving old crimes because…

Back

hair does not easily decompose

Front

When collecting hair as evidence, a detective should NOT do which of the following? Pluck hairs from the suspect’s head, Cut hairs from the suspect’s head, Collect loose hairs from the suspect’s head, A detective should do all of the above

Back

Cut hairs from the suspect’s head

Front

Human hairs generally have what two types of medulla?

Back

Fragmented or none