Download - HAIR ANALYSIS Class or Individual Evidence?
Transcript
![Page 1: HAIR ANALYSIS Class or Individual Evidence?](https://reader035.vdocuments.us/reader035/viewer/2022062422/56815e97550346895dcd2737/html5/thumbnails/1.jpg)
HAIR ANALYSISClass or Individual Evidence?
![Page 2: HAIR ANALYSIS Class or Individual Evidence?](https://reader035.vdocuments.us/reader035/viewer/2022062422/56815e97550346895dcd2737/html5/thumbnails/2.jpg)
STRUCTURE OF HAIR• Two Parts:1. Follicle:
2. Hair shaft:
![Page 3: HAIR ANALYSIS Class or Individual Evidence?](https://reader035.vdocuments.us/reader035/viewer/2022062422/56815e97550346895dcd2737/html5/thumbnails/3.jpg)
It’s In Your Genes
![Page 4: HAIR ANALYSIS Class or Individual Evidence?](https://reader035.vdocuments.us/reader035/viewer/2022062422/56815e97550346895dcd2737/html5/thumbnails/4.jpg)
Cross Section of a Hair
![Page 5: HAIR ANALYSIS Class or Individual Evidence?](https://reader035.vdocuments.us/reader035/viewer/2022062422/56815e97550346895dcd2737/html5/thumbnails/5.jpg)
Cuticle
• The cuticle varies in:
• Human hair is flattened and narrow (imbricate)• Cuticle difference is more pronounced between
species rather than individuals
• Cortex:
![Page 6: HAIR ANALYSIS Class or Individual Evidence?](https://reader035.vdocuments.us/reader035/viewer/2022062422/56815e97550346895dcd2737/html5/thumbnails/6.jpg)
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
![Page 7: HAIR ANALYSIS Class or Individual Evidence?](https://reader035.vdocuments.us/reader035/viewer/2022062422/56815e97550346895dcd2737/html5/thumbnails/7.jpg)
Types of Hair
![Page 8: HAIR ANALYSIS Class or Individual Evidence?](https://reader035.vdocuments.us/reader035/viewer/2022062422/56815e97550346895dcd2737/html5/thumbnails/8.jpg)
Using Hair in Forensics