Collecting DNA Evidence at Property Crimes
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Learning Objectives

Upon successful completion of the four modules of training, the student should be able to do the following:

  • Describe the types of physical evidence typically encountered at a property crime scene.
  • Define Locard's Exchange Principle.
  • Describe types of trace and biological evidence.
  • Define "touch DNA" evidence.
  • Explain the importance of maintaining the integrity of physical evidence.
  • List and describe the three types of crime scenes.
  • Describe the process used to secure and investigate a crime scene.
  • Describe the purpose of a victim interview.
  • Describe methods used to locate evidence at a crime scene.
  • Describe the importance of scene documentation in successful case resolution.
  • Define priorities for collecting biological evidence.
  • Define situations that require control and reference samples to be collected.
  • Describe equipment used when collecting biological evidence.
  • Describe procedures used to collect, mark and package wet and dry biological evidence.
  • Describe the purpose and method used to establish and maintain the chain of custody for items of evidence collected at a crime scene.
  • Describe the methods used to preserve evidence.
  • List the elements included in a crime scene report.
  • Describe general requirements for an investigator when testifying in court.
  • Describe the purpose and use of DNA databases.
  • List the different types of DNA profiles in CODIS.
  • Describe the purpose of a "John Doe" DNA warrant.

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