Class Notes (836,135)
United States (324,357)
CJ 210 (31)
Prof.Allen (10)
Lecture

Chapter 12 Notes.odt

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Department
Criminal Justice
Course
CJ 210
Professor
Prof.Allen
Semester
Fall

Description
9/26 Analysis of Hairs and Fibers Notes • Adjudicative: They can eliminate a suspect. • Hairs have muscles called pili arrector (goose bumps) • DNAanalysis can be performed only if root is present because of the cells • Mitochondrial DNAcan be found in the cells of the root and also in different parts of the hair shaft • Classifying hairs really looks at the medulla • Cortex is a very important part of the hair • Hollow shaft running through the center of the hair is the medulla which creates air pockets • Shaft of the hair can sometimes identify the race • Coronal and Spinous are usually animals • Internal part of the hair surrounding the medulla is the cortex • Pigment density=color of hair • The medullary index measures the diameter of the medulla relative to the diameter of the hair shaft • “Absence” medulla means that th
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