hair analysis class or individual evidence?
Post on 14-Feb-2016
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HAIR ANALYSIS Class or Individual Evidence?. STRUCTURE OF HAIR. Two Parts: Follicle: 2. Hair shaft:. It’s In Your Genes. Cross Section of a Hair. Cuticle. The cuticle varies in: Human hair is flattened and narrow (imbricate) - PowerPoint PPT Presentation
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HAIR ANALYSISClass or Individual Evidence?
STRUCTURE OF HAIR• Two Parts:1. Follicle:
2. Hair shaft:
It’s In Your Genes
Cross Section of a Hair
Cuticle
• The cuticle varies in:
• Human hair is flattened and narrow (imbricate)• Cuticle difference is more pronounced between
species rather than individuals
• Cortex:
Medulla• The medulla may vary in:
• Presence• Thickness• Pattern of pigmentation: continuous,interrupted, segmented, or solid• Opacity: how much light is
able to pass through it•More variation amongst
species than individuals
Types of Hair
Using Hair in Forensics
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