The Application of Investigative Genetic Genealogy (IGG) In Cold Cases: From DNA to Suspect Identification
Description
The capture of the Golden State Killer in 2018 marked a paradigm shift in criminal investigation, moving forensic DNA beyond simple database matching and into the realm of genealogical reconstruction. However, successfully deploying Investigative Genetic Genealogy (IGG) requires more than just a DNA sample; it demands a complex interplay of high-density genomics, traditional archival research, and strict legal adherence.
In this 2-hour intensive webinar, we will demystify the "black box" of IGG. We
will move beyond the headlines to explore the operational workflow of IGG,
distinguishing how it differs from traditional NDIS/CODIS hits. Participants will
learn how investigators utilize Direct-to-Consumer (DTC) databases like
GEDmatch and FamilyTreeDNA to reverse-engineer family trees and generate
leads for cases that have been cold for decades. Crucially, we will also address the evolving ethical landscape, including the DOJ’s Interim Policy on Forensic
Genetic Genealogy and the privacy concerns that shape current best practices.
Target Audience
• Cold Case Detectives and Investigators
• Forensic Lab Managers and Analysts
• Prosecutors and Criminal Defense Attorneys
• Victim Advocates
• Any and all Sworn Law Enforcement
• Criminal Justice College Students
Learning Objectives
By the end of this webinar, participants will be able to:
1. Differentiate Between Forensic Methods Explain the technical distinction
between traditional Short Tandem Repeat (STR) DNA profiling used in
NDIS/CODIS and the Single Nucleotide Polymorphism (SNP) sequencing
required for genealogical databases.
2. Assess Case Viability Evaluate cold case evidence to determine if it is suitable
for IGG, considering factors such as sample degradation, quantity of DNA, and the failure of previous traditional forensic methods.
3. Navigate the IGG Workflow Outline the step-by-step process of IGG, from the extraction of DNA and bioinformatic analysis to the construction of family trees and the triangulation of a potential person of interest.
4. Apply Legal and Ethical Standards Analyze the current legal frameworks
governing IGG, including Department of Justice (DOJ) guidelines, Fourth
Amendment implications regarding "abandoned DNA," and the terms of service for public genealogy databases.
5. Formulate an Investigative Strategy Develop a plan for integrating IGG leads
into active investigations without compromising the chain of custody or the
admissibility of evidence in court.