Page 15 of 16 FirstFirst ... 513141516 LastLast
Results 141 to 150 of 157

Thread: Scientists Cite Fastest Case of Human Evolution

  1. #141
    don't panic
    marduc's Avatar
    Join Date
    Oct 2008
    Last Seen
    10-22-17 @ 04:10 PM
    Gender
    Lean
    Other
    Posts
    5,301

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by mac View Post
    I don't read it to say that. What I get is that early humans and chimps were close enough to interbreed (like chimps and bonobos) for awhile and then diverged further. Added to the greater diversity of chimps than humans, that means we are spin off of chimp rather then two separate species descendant from a common ancestor.
    No that means that ~5 to 7 million years ago we started to diverge from the same ancestor, and for a while we were able to interbreed.

    50 to 80 thousand years ago something happened that drastically reduced our genetic diversity to what is referred to as Y-chromosomal Adam - Wikipedia, the free encyclopedia

    What this means is that we share a common ancestor, and our genetic variance has suffered more damage from whatever stress factors. Chimp genes have managed to come through the bottle necks with more diversity, where we as humans appear to have been down to literally one patriarchal line in the last tiny fraction of the previous millions of years since our species initially split.
    Last edited by marduc; 07-07-10 at 05:44 AM.
    Law Enforcement Against Prohibition
    Drugs are bad, prohibition is worse

  2. #142
    Sage
    mac's Avatar
    Join Date
    Jun 2010
    Location
    DC Metro
    Last Seen
    11-13-16 @ 12:58 PM
    Gender
    Lean
    Moderate
    Posts
    22,499

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by marduc View Post
    No that means that ~5 to 7 million years ago we started to diverge from the same ancestor, and for a while we were able to interbreed.

    50 to 80 thousand years ago something happened that drastically reduced our genetic diversity to what is referred to as Y-chromosomal Adam - Wikipedia, the free encyclopedia

    What this means is that we share a common ancestor, and our genetic variance has suffered more damage from whatever stress factors. Chimp genes have managed to come through the bottle necks with more diversity, where we as humans appear to have been down to literally one patriarchal line in the last tiny fraction of the previous millions of years since our species initially split.
    Assuming you are correct, would that mean that chimps are descendant from one of the homo species we commonly consider to be our ancestors?

  3. #143
    don't panic
    marduc's Avatar
    Join Date
    Oct 2008
    Last Seen
    10-22-17 @ 04:10 PM
    Gender
    Lean
    Other
    Posts
    5,301

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by mac View Post
    Assuming you are correct, would that mean that chimps are descendant from one of the homo species we commonly consider to be our ancestors?
    No, the split occurred around or before the time of Ardipithecus Ramidus.. long before the first Homo species emerged

    edit: after looking it up so I could provide the correct time instead of estimates the earliest homo species, H. Habilus is ~2.5 million years ago versus chimp/human divergence 5-7 million years ago.
    Last edited by marduc; 07-07-10 at 06:13 AM.
    Law Enforcement Against Prohibition
    Drugs are bad, prohibition is worse

  4. #144
    Sage
    mac's Avatar
    Join Date
    Jun 2010
    Location
    DC Metro
    Last Seen
    11-13-16 @ 12:58 PM
    Gender
    Lean
    Moderate
    Posts
    22,499

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by marduc View Post
    No, the split occurred around or before the time of Ardipithecus Ramidus.. long before the first Homo species emerged

    edit: after looking it up so I could provide the correct time instead of estimates the earliest homo species, H. Habilus is ~2.5 million years ago versus chimp/human divergence 5-7 million years ago.
    Ok, and since that split, we've evolved through 5 or 6 species while the chimps are mostly directly descendant from that common ancestor?

  5. #145
    don't panic
    marduc's Avatar
    Join Date
    Oct 2008
    Last Seen
    10-22-17 @ 04:10 PM
    Gender
    Lean
    Other
    Posts
    5,301

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by mac View Post
    Ok, and since that split, we've evolved through 5 or 6 species while the chimps are mostly directly descendant from that common ancestor?
    not necessarily, there are not many chimp fossils to be found/had, nor is there even close to the same amount of vested interest for seeking or finding chimp ancestors than there is in finding human predecessors, so we have found and documented human transition in a lot more detail than chimp.

    Using the Ardepithecus Ramidus fossils I mentioned earlier as the closest human ancestor to the approximate time of the Pan/hominid split we find they could not be classified as either human nor chimp, but rather a prototype that shares some similarities to both.. and to cut you off at the pass.. no you could not say it was more "chimplike" than human.

    Chimps, like humans are distinctly different from the early primates of shared lineage, just as gorillas and orangutangs while also having similarites are distinct in their own right as well.
    Last edited by marduc; 07-07-10 at 06:38 AM.
    Law Enforcement Against Prohibition
    Drugs are bad, prohibition is worse

  6. #146
    Matthew 16:3

    Join Date
    Jul 2008
    Location
    Everywhere and nowhere
    Last Seen
    06-24-17 @ 05:05 PM
    Gender
    Lean
    Progressive
    Posts
    45,603

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by mac View Post
    Yes, I meant extant species. Chimps are far more genetically diverse then humans.
    Why are you limiting the discussion to extant species?
    Tucker Case - Tard magnet.

  7. #147
    Sage
    mac's Avatar
    Join Date
    Jun 2010
    Location
    DC Metro
    Last Seen
    11-13-16 @ 12:58 PM
    Gender
    Lean
    Moderate
    Posts
    22,499

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by Tucker Case View Post
    Why are you limiting the discussion to extant species?
    Yes, I wasn't clear in that in my original question.

  8. #148
    Matthew 16:3

    Join Date
    Jul 2008
    Location
    Everywhere and nowhere
    Last Seen
    06-24-17 @ 05:05 PM
    Gender
    Lean
    Progressive
    Posts
    45,603

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by mac View Post
    Yes, I wasn't clear in that in my original question.
    But the question I asked was why are you doing that?
    Tucker Case - Tard magnet.

  9. #149
    Sage
    Hatuey's Avatar
    Join Date
    Oct 2006
    Last Seen
    Yesterday @ 11:52 PM
    Gender
    Lean
    Moderate
    Posts
    42,048

    Re: Scientists Cite Fastest Case of Human Evolution

    Why are people debating whether humans evolved from monkeys? What ****ing year are we in? 1925? Dear skeptics of evolution( ID and Creationists included), there are over 120 years of scientific evidence supporting the 'theory' of evolution. Please catch up? Maybe you have some sort of modern argument against evolution? No?
    I refuse to accept the view that mankind is so tragically bound to the starless midnight of racism and war that the bright daybreak of peace and brotherhood can never become a reality. - MLK

  10. #150
    Liberal Fascist For Life!


    Redress's Avatar
    Join Date
    Mar 2008
    Location
    Georgia
    Last Seen
    Today @ 01:04 AM
    Lean
    Very Liberal
    Posts
    93,328
    Blog Entries
    2

    Re: Scientists Cite Fastest Case of Human Evolution

    Quote Originally Posted by Hatuey View Post
    Why are people debating whether humans evolved from monkeys? What ****ing year are we in? 1925? Dear skeptics of evolution( ID and Creationists included), there are over 120 years of scientific evidence supporting the 'theory' of evolution. Please catch up? Maybe you have some sort of modern argument against evolution? No?
    Sigh...

    Humans are descended from monkeys in the same way you are descended for your cousins. We share a common ancestors with apes.
    We became a great nation not because we are a nation of cynics. We became a great nation because we are a nation of believers - Lindsey Graham

    Quote Originally Posted by Fiddytree View Post
    Uh oh Megyn...your vagina witchcraft is about ready to be exposed.

Page 15 of 16 FirstFirst ... 513141516 LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •