Lesson Plan: Interpreting Forensic Evidence in the Crime Lab
Grades 9-12
For much of the 20th century, courts relied on forensic techniques that were widely accepted as scientific, including microscopic analysis of hair. When DNA testing emerged in the late 1980s, it transformed criminal investigations and courtroom evidence. DNA analysis strengthened the ability to identify perpetrators, but it also made it possible to reexamine past convictions. In doing so, it revealed how earlier forensic evidence had sometimes been overstated, misinterpreted or insufficiently tested.
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