hemoglobin · 2009. 4. 28. · 2.8 26 oxygen y02 veins 0.91 0.55 binding 1.00 myoglobin 0.80 0.30...

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    Biochemical adaptation: mechanism and process in

    physiological evolution

    Peter W. Hochachka, George N. Somero

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    Frequency in the population

    HbS hetero ~ 25% of Africans

    !p =pq[p(wAA " wAa ) + q(wAa " waa )]

    w

    For wAA>wAa>waa stable solutions p=1 and p=0

    Other stable solutions arise if wAa>waa wAa>wAA

    Heterozygous superiority.

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    Malaria Before Columbus

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    Senegal

    Benin

    CAR

    IndiaItaly

    Greece

    Albania

    Turkey

    Arabian PeninsulaArabian Peninsula

    Origins of the Sickle Cell Gene

    Egypt

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    1/ td

    = kct

    cs

    !

    " #

    $

    % & n

    Kinetics of aggregation