FSC239Y5 Lecture Notes - Lecture 5: Nuclear Dna, Trace Evidence, Spectrophotometry
Document Summary
The microscopic debris that covers out bodies are the mute witnesses sure and faithful, of all our movements and all objects. Fibres (trace) and hairs can be transferred between individuals, between individuals and objects, or between objects. Compainant to suspect to crime scene (cycle) Investigate and associative (association between two things, person and an object) Approximately 80% of hairs fibres are list in the first 4 hours from contact/transfer. Efficient collection of evidential extraneous hair and fibres. Case items are segregated into groups which originate from a common source. A sequence is chosen for taping items from different sources so that potential contamination is minimized. Items from different sources are taped in different hair and fibre taping rooms by qualified hair and fibre personnel. A different lab coat is worn for taping items from different sources. Work areas is cleaning before and after taping and mounting. Screening hairs for further testing (nudna or mtdna analysis)
