A new paper claims that the pre-human population went through an extremely small and extremely long population bottleneck. Starting about one million years ago, the population was reduced to at most 1,280 “breeding individuals” and this lasted for over 100,000 years. To get there, they examined thousands of human genomes and assumed that all mutations are neutral. What would happen if we applied real-world mutation affects to the data? You know it. We would have gone extinct. The mutation burden would have driven us to extinction. Instead, what they really discovered was the we came from a very small founding population with only a little diversity. This fits perfectly within the Adam and Eve model of human ancestry.

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