In 2018, researchers published a family tree connecting 13 million relatives over 11 generations. Among other insights, the tree yielded a new estimate for how much of our life span is determined by genes. ScienceMagArchives
Researchers have published what may be the validated largest family tree ever: a genealogy database stretching back 5 centuries that links 13 million people related by blood or marriage. The tree has already led to such insights as the link between genes and longevity and why our ancestors married whom they did. And researchers say that's just a start.
Computational geneticist Yaniv Erlich of Columbia University says he thought up the project 7 years ago, after he got an email from a distant cousin through a website called, where people share their family trees. He emailed the company's chief technology officer, who gave him his blessing to download the site's tens of millions of public profiles listing a person's name, sex, date and place of birth, date of death, and immediate relatives .
The final result is a single pedigree connecting 13 million relatives mostly of European descent, dating back 11 generations. It includes, among others, famed population geneticistLooking across the tree's death data, the team found expected fluctuations in life span—a drop for young men during the Civil War, World Wars I and II, and a rise in childhood survival in the 1900s.
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