Hair and Fiber Lab

Which of the following are examples of physical evidence?

• DNA

• Fingerprints

• Fibers

• Hair

• All of the above

What is it called when evidence is too small to see with the naked eye?

• Physical evidence

• Trace evidence

Fingerprints are a good example of class evidence, because no two people have the same fingerprints. True or False?

• True

• False

You can tell a fiber is synthetic and not animal because it will not have a medulla or scale pattern. True or False?

• True

• False

What are the three layers that make up the hair?

• Keratin

• Medulla

• Cuticle

• Root

• Cortex

This is the outer layer of hair formed of scales of dead hair that give it it's strength.

• Medulla

• Cortex

• Cuticle

This layer contains melanin, which helps determine hair color.

• Cuticle

• Medulla

• Cortex

This is the inner layer of the hair. This layer appears in patterns that are different between individual people and different types of animals.

• Cortex

• Medulla

• Cuticle

The follicular tag contains DNA and is also known as

• the cortex

• the root

• the medulla

• the shaft

Hair can only be considered class evidence because it is impossible to link the hair to one individual. True or False?

• True

• False