Palermo Trapani
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Some clarification to my own post 17. I have read the paper by Bergstrom, Stringer, Hajdinjak, Scerri adn Skoglund (2021) entitled "Origins of modern human Ancestry" just published in Nature. It is a really, really, really good read. I am not on Twitter, but I read a set of comments on Skoglund's twitter that were posted and I think he has provided a link which allows someone to get the full copy of the article on his Twitter account.
So with respect to my post, Bergstrom et al 2020 (p.230) in their discussion on Gene flow from Neanderthals conclude that section by stating "Thus, we cannot presently rule out an assimilation scenario in which Neanderthals were absorbed into a larger expanding modern human population." However, I agree that is also possible that war/conflict between the two groups resulted in Neanderthals being killed off. So I think both hypotheses are valid and I guess archeological evidence will be needed to support one and reject the other. So any assumptions that I may have had regarding Neanderthals and AMH sort of were reset after reading the paper.
So my take on the paper is that some of the maintained models that have been around might have to be revisited. Bergstrom et al 2021 in the Section of the paper entitled "The Last Common Ancestor of modern and Archaic humans" discuss who are possible candidates and who should be ruled out, but they close that section with, in my view, is a statement that challenges much of the maintained assumptions with respect to AMH. From the paper and I quote"
"Although it is commonly assumed that our ancestors would have lived in Africa before 500 ka, it is still too soon to exclude that they could have lived in Eurasia. A Eurasian origin during this period would also require fewer migrations between Africa and Eurasia to explain currently understood relationships between modern human, Neanderthal, Denisovan and the super-archaic ancestries88. Proteomic data from European H. antecessor165, which shows the potential of ancient protein preservation in the deep past, suggests that it might have been closely related to the common ancestor, but the ancestry information provided by dental enamel proteins is still of low resolution. In any case, with the earliest generally accepted evidence of hominins outside of Africa at around 2 Ma166, the fossil record strongly suggests that all human ancestors before this point, until the common ancestor with chimpanzees, lived in Africa."
So again, great read, Cheers, PT
So with respect to my post, Bergstrom et al 2020 (p.230) in their discussion on Gene flow from Neanderthals conclude that section by stating "Thus, we cannot presently rule out an assimilation scenario in which Neanderthals were absorbed into a larger expanding modern human population." However, I agree that is also possible that war/conflict between the two groups resulted in Neanderthals being killed off. So I think both hypotheses are valid and I guess archeological evidence will be needed to support one and reject the other. So any assumptions that I may have had regarding Neanderthals and AMH sort of were reset after reading the paper.
So my take on the paper is that some of the maintained models that have been around might have to be revisited. Bergstrom et al 2021 in the Section of the paper entitled "The Last Common Ancestor of modern and Archaic humans" discuss who are possible candidates and who should be ruled out, but they close that section with, in my view, is a statement that challenges much of the maintained assumptions with respect to AMH. From the paper and I quote"
"Although it is commonly assumed that our ancestors would have lived in Africa before 500 ka, it is still too soon to exclude that they could have lived in Eurasia. A Eurasian origin during this period would also require fewer migrations between Africa and Eurasia to explain currently understood relationships between modern human, Neanderthal, Denisovan and the super-archaic ancestries88. Proteomic data from European H. antecessor165, which shows the potential of ancient protein preservation in the deep past, suggests that it might have been closely related to the common ancestor, but the ancestry information provided by dental enamel proteins is still of low resolution. In any case, with the earliest generally accepted evidence of hominins outside of Africa at around 2 Ma166, the fossil record strongly suggests that all human ancestors before this point, until the common ancestor with chimpanzees, lived in Africa."
So again, great read, Cheers, PT
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