IN THIS ISSUE
Mixture Matters: Practical Strategies for Interpreting Complex DNA Mixtures
Mixture interpretation begins at collection. Sampling strategy, substrate type, and environmental exposure all affect how contributors are represented in a profile.
The case saw a significant breakthrough in 2019, when the man’s remains were exhumed. The exhumation enabled investigators to obtain a DNA profile from a femur bone.
It is believed Patricia Ann Ritchie was last seen in 1977 in Harrisonburg, Virginia. It is unknown at this time exactly when and with whom Ritchie traveled to Florida before her death.
These efforts ultimately led to the positive identification of the remains found in 2024 as belonging to Luke Micheal Butler, whose partial remains were previously identified in 2022.
New research confirms the potential for police forensic investigators to carefully consider the presence of pets at crime scenes as a credible new avenue for finding and investigating DNA leads to ...
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