Re: evolution and diet (was: FITNESS: Diet and Exercise)

From: spike66 (spike66@attbi.com)
Date: Tue Apr 15 2003 - 21:08:23 MDT

  • Next message: spike66: "Re: evolution by mate selection, gene manipulation"

    Damien Sullivan wrote:

    >>contemporary humans were selected. Our genome can have changed little since
    >>the beginnings of agriculture, so, genetically, humans remain Stone
    >
    > See, it's that "can have changed little" which I frankly question. It's been
    > 500 generations. The Grants in the Galapagos have seen genetic shifts in 20
    > generations... -xx- Damien X-)

    Right! Exactly, Damien, this is what I would expect.
    My notion is that in general, the evolutionary
    mechanism of mate selection leads to a number of
    positive feedback mechanisms, whereas survival
    selection more often leads to negative feedback
    mechanisms. Since humans are highly mobile and
    mate choice is such a strong feature of mating,
    I would expect the human genome to be able to
    evolve more quickly than typical mammals.

    spike

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