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Forensics and time of death
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Estimating a post-mortem interval

Estimating a post-mortem interval

Timeline showing body cooling, rigor mortis, livor mortis and decomposition changing over time after death

Forensic scientists usually estimate a post-mortem interval, or PMI, rather than the exact minute of death. PMI means the time that has passed since death, and the best answer is normally a range.

Forensics and time of death Lesson

  1. A Level
  2. /Biology
  3. /Forensics and time of death

Step-by-step lessons on Edexcel A A Level Biology Forensics and time of death. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.

Lessons