Forensic Hair Analysis

Medulla Pattern

• Uniserial

• Multiserial

• Vacuolated

• Lattice

• Amorphous

Which medulla pattern?

• Fragmented/Interrupted

• Absent

• Continuous

Tags

NGSS.HS-LS3-2

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

Type of cuticle

• coronal

• spinous

• imbricate

• solid

What cuticle type is in the picture?

• Coronal

• Imbricate

• Spinous

How can you tell the difference between animal and human hair?

• Human is imbricate and animal is always spinous.

• Human medullary index is less than animal.

• Human hair is thinner than animal hair

• Animal hair has a thicker cortex than human.

Which medulla pattern?

• Continuous

• Fragemented/Interrupted

• Absent

Which medulla pattern?

• Absent

• Continuous

• Fragmented/Interrupted

Where is Nuclear DNA found in the hair?

• root

•  hair shaft

• tip

• medulla

A compound microscope that allows the side-by-side comparison of samples, such as hair or fibers

• medulla

• hair follicle

• mitochondrial DNA (mtDNA)

• comparison microscope