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Unit 7:  DNA - a Forensic Tool

Page history last edited by Matthew Anderson 7 years, 8 months ago

Mastery Objectives / Critical Thinking Skills

  • Recount the history of DNA as a forensic tool
  • Using a diagram, explain the basic structure of DNA, including base pairing.
  • Explain DNA replication in the context of the polymerase chain reaction (PCR).
  • Describe small tandem repeats (STRs) and their use as DNA “fingerprints.”
  • Discuss the role of gel electrophoresis in characterizing the tandem repeat patterns in the DNA of individuals.
  • Compare and contrast the role of mitochondrial and Y chromosome markers in forensic identification.
  • Describe CODIS, the type of information it contains, and the methods by which that information is obtained and used.
  • Using tables and sketches, explain where DNA may be found at a crime scene, the method(s) for collecting it, and the methods for preserving it for analysis.







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