Which item is NOT listed as influencing PMI estimates?

• A. Skull suture pattern
• B. Environmental conditions
• C. Insect activity
• D. Seasonality

Answer: (A)

PMI estimates rely on factors that alter the rate of decomposition and the timing of insect colonization. Environmental conditions such as temperature and moisture shape how quickly remains break down. Insect activity, including the species present and their developmental stages, provides time cues for the decomposition process. Seasonality influences insect life cycles and carcass cooling or warming patterns, further affecting PMI assessments. Skull suture pattern, on the other hand, is an inherent anatomical feature used to assess age at death and does not change with postmortem time in a way that informs how long it has been since death. Because it does not influence the decomposition timeline or insect activity, it is not used to estimate PMI.