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View Diary: "Y-Chromosomal Adam" possibly farther back in time than thought (237 comments)

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  •  And how does that work? (3+ / 0-)
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    oceanview, greenearth, raincrow

    Neanderthals evolved from somewhere else than the primate line?  That's news to a lot of folks.

    the fact that you're right is nothing more than interesting

    by Egg on Tue Mar 12, 2013 at 04:42:49 PM PDT

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    •  it's also correct (8+ / 0-)

      Neanderthal progenitor left Africa quite a while ago, thus why you won't find any Neanderthal DNA in any current African populations.

      It's possible though that they are there, but no neanderthal fossils have been found in Africa at all.

      the Neanderthal are on a different branch than we are, although they were obviously close enough for us to reproduce with them.

    •  Still the primate line, but glaciation isolated a (8+ / 0-)

      number of homonid populations at different times. Long enough to diverge into separate species after having migrated out of Africa.

      Genetic evidence of Neandertal influence, (interbreeding), is present in populations everywhere except Africa. Neandertals were cold-adapted and apparently didn't return. Denosivan influence is primarily seen in parts of Asia and the original populations of Australia and New Guinea. The only direct examples of Denosivan homonids are from a cave in, Siberia, I think it was.

      Information is abundant, wisdom is scarce. ~The Druid.
      ~Ideals aren't goals, they're navigation aids.~

      by FarWestGirl on Tue Mar 12, 2013 at 06:24:21 PM PDT

      [ Parent ]

    •  you sound like you are mocking (1+ / 0-)
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      raincrow

      "that's news", FYI
      but it is you not I who are not following the logic of how that could be. Your suposition is not the only way that could be true.

      Humans originated in Africa. Waves of humans left Africa to populate the rest of the world.

      THe ancestors of Neanderthals left Africa several hundred thousand years ago. They adapted to a glacial climate and became the Neanderthals.

      Their cousins who stayed in Africa continued to evolve. Some became Homo Sapiens.

      60K years ago (?) some Homo Sapians left N. Africa and crossed into the middle east. Then, later, they crossed into Neanderthal lands in Europe. Neanderthals disappeared. Neanderthal groups apparently were smaller than HS groups and less dense/numerous. They were out competed and outbread...but also it turns out only in the last few years we know that after all We DID interbreed with them(so very cool).

      So Modern Africans who's ancestors never left Africa, as you can see, never got any Neanderthal genes (from Europe and the Middle East). Modern humans intermingled with Neanderthals in the Middle East and Europe and then those modern humans populated the rest of the world.

      One punch line for me is that for centuries (White) Americans had thought of Africans/African AMericans as inferior or worse (subhuman). Yet it looks like it is THEY that are the only ones who are PURE Homo Sapiens Sapiens straight back to the orgins of our species. For decades people thought Neanderthals were 'cave men" and backwards..but it is White Americans who have the "cave-men" genes.
      irony.

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