Probabilistic Genotyping Expert Testimony; Communication, Challenges, and Examples

Monday September 23rd, 2019 // 8:30 am - 5:00 pm

Early Registration (before July 15, 2019)$225
Standard Registration$250

Registration fees include breakfast and lunch.


Probabilistic genotyping methods for the interpretation of mixed DNA profiles are now accepted and are in widespread use by the forensic community. Thousands of cases using probabilistic genotyping methods have been presented in the courts around the US. This workshop uses real examples to demonstrate how to communicate PG evidence in court, common challenges to PG evidence and common lines of questioning.


Learning Outcomes:

  1. Gain an understanding of how probabilistic genotyping works, in particular STRmix
  2. Gain an understanding of likelihood ratios
  3. Learn about admissibility hearings, error, and uncertainty among others


Intended Audience:

Practicing forensic scientists, lawyers, and stakeholders


Jo-Anne Bright

Environmental Science and Research Limited (ESR) New Zealand

Jo-Anne Bright is a Senior Science Leader within the Forensic Biology group at the Institute of Environmental Science and Research Limited (ESR) New Zealand, where she has worked since 1999. Jo is one of the co developers of STRmix™, expert software for the interpretation of forensic DNA profiles and the new Australasian standard.

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Rachel Oefelein

DNA Labs International (DLI)

Rachel Oefelein is currently the Quality Assurance Manager/Senior DNA Analyst at DNA Labs International (DLI). Her courtroom experience includes testimony in four Florida counties, two states and three countries including misdemeanor and felony trials as well as both Arthur and Daubert hearings. 

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