Forensics (Fibers, Textiles, Hairs)

Which of the following information will be useful for forensic scientists?

• textile from which fibres originated.

• number of fibers found.

• textile from which fiber originated.

• fiber color.

• where the fiber was found.

Fibers are woven into textiles or fabrics.

• True

• False

When fibers are transferred directly from victim to suspect or suspect to victim, this is called:

• necessary transfer.

• absolute transfer.

• direct transfer.

• None of these choices.

Fibers are classified as either:

• natural fibers or synthetic fibers.

• polymers or synthetic fibers.

• acrylic fibers or plant fibers.

• olefins or synthetic fibers.

Natural fibers come from:

• animals.

• plants.

• minerals that are mined from the ground.

• All of these choices.

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

• medulla
• cortex
• cuticle
• keratin 

The name for man-made fibers is:

• processed fibers
• synthetic fibers
• natural fibers
• modified fibers

Hair is helpful in solving old crimes because…

• hair on a suspect never changes
• hair always contains DNA evidence
• hair takes little room to store in evidence closets
• hair does not easily decompose

When collecting hair as evidence, a detective should 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 comb

• A detective should do all of the above

Hair is composed of a protein called...

• keratin

• medulla

• casein

• cellulose