International A Level Biology / Decomposition and forensics

DNA profiling: identification and relationships

Edexcel International A Level Biology (YBI11), chapter 19: Decomposition and forensics, specification point 6.19. Part of the full course.

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DNA profiling compares band patterns made from short tandem repeats (STRs). It can help identify a sample, test paternity and judge how closely organisms are related.

More lessons in Decomposition and forensics

• Microorganisms, decomposition and the carbon cycle
• Time of death: body temperature and rigor mortis
• Time of death: decomposition, succession and forensic entomology
• The polymerase chain reaction (PCR)
• Gel electrophoresis