How we're building the world's largest family tree | Yaniv Erlich

TL;DR

This content discusses the use of genealogy websites and the immense potential they have for biomedical research, as well as the impact of genealogy on understanding humanity's history, migration patterns, and even solving cold cases.

Transcript

People use the internet for various reasons. It turns out that one of the most popular categories of website is something that people typically consume in private. It involves curiosity, non-insignificant levels of self-indulgence and is centered around recording the reproductive activities of other people. (Laughter) Of course, I'm talking about g... Read More

Key Insights

• 🌳 Genealogy, particularly using websites like geni.com, has immense potential for biomedical research and constructing large family trees.
• 💡 By connecting millions of people's family trees, a family tree of all humankind can be created, allowing for quantitative information about humanity and questions about demography.
• 🌎 The map of all connected profiles reveals the contours of many countries, showing the spread of Western lineage along colonial routes.
• 💑 The distance between the birth locations of husbands and wives has increased over time due to factors like the Industrial Revolution and increased mobility.
• ♀️ In the last 300 years, females have been found to do the hard work of migrating to form families.
• 🧬 Genetic variations only account for 15% of differences in lifespan between individuals, showing that actions and environmental factors have a greater impact.
• 🔍 Genealogical DNA information can be used to create forensic capabilities, such as in capturing the Golden State Killer, by placing DNA samples on a large family tree and triangulating connections to find potential suspects.
• 🔬 Genetic genealogists are citizen scientists with a passion for uncovering our past and using it to unlock the future, and their work has already helped solve numerous cold cases.

Questions & Answers

Q: What is the most popular category of website that people consume in private?

The most popular category of website that people consume in private is genealogy, the study of family history.

Q: How can genealogy websites be used for biomedical research?

Genealogy websites like geni.com can be used for biomedical research by allowing genealogists to upload their family trees, which are then scanned and merged with existing trees. This process creates large family trees that can be used to study and analyze human genetic data.

Q: How many people were connected in a single family tree using the geni.com website?

Using the geni.com website, 125 million people were connected into a single family tree.

Q: What is an example of a famous historical figure's connection found through the geni.com family tree?

An example of a famous historical figure's connection found through the geni.com family tree is that Alexander Hamilton, the first US Secretary of the Treasury, is a blood relative of Kevin Bacon. Both are descendants of a Scottish lady who lived in the 13th century.

Q: What is the error rate in father-child connections found in the genealogy data?

The error rate in father-child connections found in the genealogy data is 1.9 percent. This error rate is similar to previous studies using clinical-grade pedigrees, indicating that it is not unique to the genealogy data.

Summary & Key Takeaways

• People use the internet for various reasons, and one popular category of website is genealogy, the study of family history.

• Genealogy websites like geni.com allow users to upload their family trees, which can then be merged with existing trees to create larger family trees that go beyond individual genealogists.

• The data from these family trees can be used for biomedical research, to learn about demography, analyze human health, and even solve cold cases with DNA forensic capabilities.