If You have 2 parents, 4 grandparents, 8 great parents, so if you go back 40 generations you’d have a supposed 1 Trillion ancestors, But only 100B humans have ever existed. Explain.
In: Biology
Well you must read about Ghengis Khan. He apparantly has about 16 million descendants alive today. Source – [https://www.nationalgeographic.com/culture/article/mongolia-genghis-khan-dna](https://www.nationalgeographic.com/culture/article/mongolia-genghis-khan-dna)
Ghengis Khan ancestry was studied further because it was documented in history that he had many many “official” wives. There would be hundreds – if not thousands of such cases spread over history – across ages / countries. So 100 Billion humans – ever existed – could possibly be correct.
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