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Other Sciences
Biology and Medical
Is there a unique ancestor of all life?
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[QUOTE="Grinkle, post: 6351658, member: 335748"] [B]TL;DR Summary:[/B] Is there known to be a single ancestor for all life that exists today? I don't know enough biology to ask this question in a well framed manner. I don't know at what point a primitive self-replicating thing is considered a living individual - I expect that is a matter where reasonable people can disagree. I am sure that is not the only ill-defined concept in my question. Is it known that there was a single individual living entity that is a common ancestor for all living inidividuals on Earth today? Or is it possible that life started more than once independently on Earth and there are living individuals today on Earth that do not share a common ancestor? [/QUOTE]
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Is there a unique ancestor of all life?
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