FS - Chapter 11 Trace Evidence I: Hairs and Fibers
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Created by:
nicholasbg on June 14, 2011
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SHSD
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14 terms
Terms | Definitions |
|---|---|
 anagen phase | the initial growth phase during which the hair follicle actively produces hair |
| catagen phase | a trasition stage between the anagen and telogen phases of hair growth |
| cortex | the main body of the hair shaft |
| cuticle | the scale structure covering the exterior of the hair |
| follicular tag | the translucent piece of tissue surrounding the hair's shaft near the root that contains the richest source of DNA associated with hair |
| macromolecule | a molecule with high molecular mass |
| manufactured fibers | fibers derived from either natural or synthetic polymers |
| mitochondrial DNA | DNA present in small structures (mitochondria) outside the nucleus of a cell; m itochondria supply energy to the cell; this form of DNA is inherited maternally (from the mother) |
| molecule | two or more atoms held together by chemical bonds |
| monomer | the basic unit of structure from which a polymer is constructed |
| natural fibers | fibers derived entirely from animal or plant sources. |
| nuclear DNA | DNA tha is present in the nucleus of a cell and is inherited from both parents. |
| polymer | a substance composed of a large number of atoms that are usually arranged in repeating units |
| telogen phase | the final growth phase in which hair naturally falls out of the skin |
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