Technique to Track Golden State Killer Suspect Could Find You Too

Sixty percent of Americans with European ancestry can be traced to a given DNA sample, even if they’ve never had genetic testing, scientists say.

Written byAshley Yeager
| 2 min read

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ABOVE: ISTOCK, JOVANMANDIC

Matching crime-scene DNA to data in a genealogy site recently helped cops nab a suspect in a decades-old murder case referred to as the Golden State Killer. Now, scientists say, the technique could be used to identify more than 60 percent of US citizens with European ancestry by a given DNA sample.

“In a few years, it’s really going to be everyone,” study coauthor Yaniv Erlich, a computational geneticist at Columbia University, tells Science.

Erlich and his colleagues were able to home in on the identity of a person from an anonymous DNA sample using only a basic characteristic about the person, such as her age, and a genetic database of 1.28 million individuals. The team winnowed the results from more than 1 million people to roughly 20 with the technique and could narrow it even further using census data and other publicly available records, according to ...

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Meet the Author

  • Ashley started at The Scientist in 2018. Before joining the staff, she worked as a freelance editor and writer, a writer at the Simons Foundation, and a web producer at Science News, among other positions. She holds a bachelor’s degree in journalism from the University of Tennessee, Knoxville, and a master’s degree in science writing from MIT. Ashley edits the Scientist to Watch and Profile sections of the magazine and writes news, features, and other stories for both online and print.

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