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Mitochondrial Eve

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Mitochondrial Eve is a concept in biology of a bottleneck the human race passed through in its population some time in prehistory.

Mitochondria, the cell's batteries, are passed down only through the female line. They also are semi-independent symbionts with us, and mutate at a different rate.

After comparing the mitochondria of a sampling of many of the populations on Earth, scientists found everyone's mitochondria's dna is almost perfectly uniform.

It;s a beautiful, romantic idea.

You may read more at The Flying Trilobite
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Harris2300's avatar
Here's some cool news.
After doing some super-heavy genomic testing on mitochondrial DNA, they've confirmed the age of the mother of us all to be about 200,000 years ago. That's the exact time when anatomically modern humans made their debut.
[link]