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  1. #1
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    Scientists replicate key evolutionary step in life on earth

    From the article from www.physorg.com:

    More than 500 million years ago, single-celled organisms on Earth's surface began forming multi-cellular clusters that ultimately became plants and animals. Just how that happened is a question that has eluded evolutionary biologists.

    Now scientists have replicated that key step in the laboratory using common Brewer's yeast, a single-celled organism.

    The yeast "evolved" into multi-cellular clusters that work together cooperatively, reproduce and adapt to their environment--in essence, they became precursors to life on Earth as it is today.

    The results are published in this week's issue of the journal Proceedings of the National Academy of Sciences (PNAS).

    "The finding that the division-of-labor evolves so quickly and repeatedly in these 'snowflake' clusters is a big surprise," says George Gilchrist, acting deputy division director of the National Science Foundation's (NSF) Division of Environmental Biology, which funded the research.

    "The first step toward multi-cellular complexity seems to be less of an evolutionary hurdle than theory would suggest," says Gilchrist. "This will stimulate a lot of important research questions."

    It all started two years ago with a casual comment over coffee that bridging the famous multi-cellularity gap would be "just about the coolest thing we could do," recalled Will Ratcliff and Michael Travisano, scientists at the University of Minnesota (UMN) and authors of the PNAS paper.

    Other authors of the paper are Ford Denison and Mark Borrello of UMN.

    Then came the big surprise: it wasn't that difficult.

    Using yeast cells, culture media and a centrifuge, it only took the biologists one experiment conducted over about 60 days.
    • Skepticism is the antiseptic of the mind.
    • Remember why we debate. We have nothing to lose but the errors we hold. Who but a stubborn fool would hold to errors once they have been exposed?

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  2. #2
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    Quote Originally Posted by RAM View Post
    Well, fruit flies speak up against evolution. Since fruit flies have a very short life span, it is easy to simulate millions of generations of fruit flies. And a fruit fly is still a fruit fly without any change in their genetic makeup. no matter how many millions of generations. Even mutated fruit flies doesn't evolve into any new species or sub species of fruit flies. This is a good read against evolution:

    http://www.pathlights.com/ce_encyclo...ia/10mut10.htm


    God bless His creatures.
    Ask and You shall receive,
    Seek and You shall find,
    Knock and the door will be open unto You.

  3. #3
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    Quote Originally Posted by CWH View Post
    Well, fruit flies speak up against evolution. Since fruit flies have a very short life span, it is easy to simulate millions of generations of fruit flies. And a fruit fly is still a fruit fly without any change in their genetic makeup. no matter how many millions of generations. Even mutated fruit flies doesn't evolve into any new species or sub species of fruit flies. This is a good read against evolution:

    http://www.pathlights.com/ce_encyclo...ia/10mut10.htm


    God bless His creatures.
    That link has been thoroughly debunked here.

    Christians make themselves and their religion look false and foolish when they go up against modern science, especially when they present arguments that are so obviously weak, ignorant, and fallacious.
    • Skepticism is the antiseptic of the mind.
    • Remember why we debate. We have nothing to lose but the errors we hold. Who but a stubborn fool would hold to errors once they have been exposed?

    Check out my blog site

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