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  1. #1
    From the Undertow CuriousFeeling's Avatar
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    Default Discovery of "Arsenic-bug" Expands Definition of Life

    http://science.nasa.gov/science-news...2dec_monolake/

    NASA astrobiologists have discovered that the first known microorganism on Earth that is able to reproduce using the toxic element arsenic. Arsenic was found to have replaced phosphorous in the backbone of the DNA molecule. These organisms are found in California's Mono Lake.

    I wonder how the arsenic was able to replace the phosphorous in the first place. I must have occurred very early in the evolution of the organism.

    (Apparently I didn't read the thread in the "Current Events" section that is the same topic as this thread. Feel free to merge this thread with the other one! Epic Se Fail!)
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    Johari/Nohari

    “Thoughts are the shadows of our feelings -- always darker, emptier and simpler.”
    ― Friedrich Nietzsche




  2. #2
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    This news didn't really excite me, actually. It just shows evolution occuring, not a seperate abiogenesis event that occurred. Furthermore, the organism merely substituted its sugar-phosphate backbone with a sugar-arsenic backbone.

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