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Science News

Ape-Human DNA Split 29

M. Boss writes "CNN is running a story about a gene split between humans and the apes. This is the second major DNA article regarding human evolution published in the last month (the first being about the FOXP2 gene, possibly responsible for human speech and comprehension). This second story is about a gene missing in humans that is responsible for production of a sugar acid, and possibly human brain expansion."
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Ape-Human DNA Split

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  • "Get your stinking paws off me you damn dirty ape!"
  • Sialic Acid (Score:3, Informative)

    by masterkool ( 550633 ) <masterkool@hotmail.com> on Tuesday August 27, 2002 @10:09AM (#4148187) Homepage
    Here [jhu.edu] is a site about the pathway sialic acid took through human cells. Its a bit confusing, but informative never-the-less. And here [leeds.ac.uk] is a PDF of the basic functions of sialic acid. It also has a bit on directed evolution.
    • Re:Sialic Acid (Score:4, Informative)

      by nucal ( 561664 ) on Tuesday August 27, 2002 @10:31AM (#4148348)
      Probably the major role for sialic acid is to control how cells interact with each other. For instance, the ability of Neural Cell Adhesion Molecule (NCAM) to allow cells to specifically communicate and attach to each other depends on how much sialic acid [devbio.com] is added to the NCAM - more sialic acid makes NCAM less sticky and vice versa. Controlling whether cells stick together or not helps determine tissue organization. This is part of the interest in the gene concerning apes vs. humans, since a relatively small change in sugar metabolism might have a large effect on brain development and function.
      • by Scaba ( 183684 )
        What's more amazing is the large effect a mere 24 oz. of sugar and coffee (aka venti Caramel Frappucino) has on how software gets developed and functions where I work.
  • Does this mean we split the Darwinism Award for our cousins?

    I can't imagine what the apes can do that us human frequently and stupidly do?

The most exciting phrase to hear in science, the one that heralds new discoveries, is not "Eureka!" (I found it!) but "That's funny ..." -- Isaac Asimov

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