Re: Less genes than expected

From: Zylogy@aol.com
Date: Mon Feb 12 2001 - 21:17:48 GMT

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Date: Mon, 12 Feb 2001 16:17:48 EST
Subject: Re: Less genes than expected
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    We have embryonic hemoglobin, fetal, and several other varieties active
    during different life-stages. The reason is that in the womb, the developing
    offspring's hemoglobin has to have a higher oxygen affinity than mom's, or
    there will be no tendency to chemically transfer off the one to the other in
    the world of equilibrium effects. Later we are of different sizes and energy
    economy, and we need different forms to cover that too. If this is the norm,
    then very many gene products will be tailored to environmental specifics,
    either hard-wired into the genome or edited after transcription- it really
    doesn't matter in the end so long as the "right" match is gotten.

    Behavior works the same- inflexibility is similar in spirit to having only
    one protein molecule with one activity profile. More brain cells yields more
    fluidity of response (over various different brain structures, cortical
    columns, or what-have-you)- that's one of the reasons that small animals have
    very jerky movements, and seemingly quantized response "packages" to various
    stimuli.

    Jess Tauber

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