Centimorgans (cM)

Related terms

Barbara Rae-Venter

The genetic genealogist who led the family-tree reconstruction in the Golden State Killer investigation. Previously used the same technique to identify an...

CODIS

The FBI's Combined DNA Index System, the US national STR-based forensic DNA database. Contains profiles from convicted offenders, arrestees, and unidentified crime-scene...

ForenSeq Kintelligence

A Verogen (formerly Illumina) forensic SNP genotyping kit targeting approximately 10,000 kinship-informative SNPs, designed to generate profiles compatible with consumer genealogy databases...

GEDmatch

A consumer genealogy database founded in 2010, used in the Golden State Killer investigation. Changed from opt-out to opt-in for law-enforcement access...

Genetic Genealogist

A specialist who combines DNA match data with traditional genealogical record research to reconstruct family trees. In forensic IGG casework, the genetic...

Investigative Genetic Genealogy (IGG)

A forensic identification technique that uploads a crime-scene DNA profile to a consumer genealogy database, identifies partial matches suggesting distant family relationships,...

Opt-in Policy

The GEDmatch policy adopted in May 2019 requiring database users to affirmatively consent for their profile to be visible in law-enforcement queries,...

Parabon NanoLabs

A US company that became the primary commercial provider of forensic IGG casework following the Golden State Killer case, offering the Snapshot...

Single Nucleotide Polymorphism (SNP)

A position in the genome where a single nucleotide varies between individuals. Consumer DTC genomic tests genotype hundreds of thousands of SNPs;...

Explained in

• DTC Genealogy: The Golden State Killer Paradigm and GEDmatch PolicyThe unit of genetic map distance used to measure shared DNA between individuals. A first-degree relative shares approximately 2,550 cM; a third cousin shares a...