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Everyone Is Related: Difference between revisions

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== Real Life ==
* Common in [[Useful Notes/Iceland|Iceland]], which has a small, almost completely genetically homogeneous population that has lived in geographic isolation for over a millennium. It's not unheard of to start dating an erstwhile complete stranger, and then encounter them at a reunion of extended family. This high level of national endogamy makes Iceland very interesting to genetic researchers.
* The human species as a whole has relatively little genetic variation, as the result of a "bottleneck" where the population decreased to very low numbers about 70,000 years ago. In fact, all living humans are descended from "Adam" who lived about 60,000 to 90,000 years ago, meaning that we are all related, albeit distantly in most cases.
 
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