miniPCR bio™ Electrophoresis Forensics Lab. Wrongfully Convicted? Instructor's and Student's Guide
Version: 1.1 - Release February 2022 - © 2022 by miniPCR bio™
Student's Guide
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6. When CODIS was first established it looked at 13 STR regions. Investigators have since
expanded it to include 20 locations. Why do you think investigators wanted to compare
more locations when looking for DNA matches?
7. What can you conclude if a suspect's STR profile does not match DNA evidence from the
crime scene at a single STR location?
8. What can you conclude if a suspect's STR profile matches DNA evidence from the crime
scene at all 20 STR locations?
