22 Surprising Facts About The Early Humans - tworeddots.com
22 Surprising Facts About The Early Humans
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Early Humans have incredibly low genetic diversity

Humans are among the least genetically diverse species, mostly because we probably descended from a small group of early humans who lived in East Africa.

22 Surprising Facts About The Early Humans
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Population geneticists describe genetic diversity with a measure called "effective population size." Basically, effective population size is how many people you would need to reproduce the genetic diversity of our full population. For humans, this number is really low and hovers around 15,000 individuals. It is kind of crazy when you consider that actual population size is 7 billion. If compared to mice, some species of them have an effective population size of 733,000.

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