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Law Enforcement Application
The value of familial searching may be further supported by survey results from a United States Department of Justice survey that indicated 46% of those held in jails have at least one close relative who has been incarcerated.31 If the matching person who committed the offense is not yet in the databank, their close relative may be in there.
At that point law enforcement can utilize this investigative lead to determine on which close family member to focus their investigation. Law enforcement can then use any number of lawful investigative techniques to identify the suspect family member, obtain a DNA sample, and determine whether there is a match between the reference sample and the crime scene evidence.
The process is not guaranteed to succeed. For starters, it can only succeed if there is a close relative in the database.
31 F.R. Bieber, C.H. Brenner, D. Lazar, Finding Criminals Through DNA of Their Relatives, Science 312 (2006) 1315–1316.
Additional Online Courses
- What Every First Responding Officer Should Know About DNA Evidence
- Collecting DNA Evidence at Property Crime Scenes
- DNA – A Prosecutor’s Practice Notebook
- Crime Scene and DNA Basics
- Laboratory Safety Programs
- DNA Amplification
- Population Genetics and Statistics
- Non-STR DNA Markers: SNPs, Y-STRs, LCN and mtDNA
- Firearms Examiner Training
- Forensic DNA Education for Law Enforcement Decisionmakers
- What Every Investigator and Evidence Technician Should Know About DNA Evidence
- Principles of Forensic DNA for Officers of the Court
- Law 101: Legal Guide for the Forensic Expert
- Laboratory Orientation and Testing of Body Fluids and Tissues
- DNA Extraction and Quantitation
- STR Data Analysis and Interpretation
- Communication Skills, Report Writing, and Courtroom Testimony
- Español for Law Enforcement
- Amplified DNA Product Separation for Forensic Analysts