Hair Analysis in Forensics Part 1

How many hairs does the average person lose per day?

• 10 to 40

• 40 to 125

• 125 to 200

• 200 to 300

What are the functions of hair in our body?

• Regulate body temperature, act as a sensory organ, and protect the body

• Provide important clues in investigations, solve cases, and narrow down suspects

• Help investigators get leads, collect DNA evidence, and link to individuals

• Narrow down the suspect field to a group of people, provide macroscopic and microscopic observations, and collect hair samples

What is the difference between class evidence and individual evidence in hair analysis?

• Class evidence narrows down the suspect field to one individual person, while individual evidence narrows down the suspect field to a group of people

• Class evidence provides macroscopic and microscopic observations, while individual evidence collects hair samples

• Class evidence is found with the follicle attached, while individual evidence is found without the follicle

• Class evidence can be linked to one individual person through DNA analysis, while individual evidence can only narrow down the suspect field to a group of people

What can be determined from hair analysis without the follicle?

• The presence of mitochondrial DNA

• The macroscopic and microscopic features of the hair

• The pattern of the medulla

• The pigmentation of the cortex

How can hair be collected from a crime scene?

• Plucking, shaking, and scraping surfaces

• Using adhesives

• Both A and B

• None of the above

What are the macroscopic properties of hair?

• Length, color, curliness, and texture

• Pattern of the medulla, pigmentation of the cortex, types of scales, and growth of the hair cuticles

• Transparent outer layer, overlapping scales, and movement from the scalp to the end of the hair shaft

• Nuclear DNA analysis, microscopic observations, and collection of hair samples

What is the main function of the cuticle?

• To regulate body temperature

• To act as a sensory organ

• To protect the cortex and medulla

• To provide important clues in investigations

Which part of the hair shaft contains the pigment or melanin?

• Cuticle

• Cortex

• Medulla

• Follicle

What is the youngest part of the hair shaft?

• Cuticle

• Cortex

• Medulla

• Follicle

How many classifications of medulla patterns are there?

• 1

• 2

• 3

• 4