Communication - fast enough just to stay in place"(as...

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Communication, and especially language , are further "key innovations" that may have lead humans into a new "adaptive zone". But literature (Lascaux cave paintings, National Inquirer; and now consider electronic transfer of literary info, e-mail, etc.) really sets us apart. Our rate of evolution is dramatic on all counts. While the beaver, in building its dam, alters the environment that surrounds it, it has evolved in this context of altering its environment in a predictable way for a long time. We are no where near "equilibrium" with respect to how we are evolving with the extensive alterations we are making to our environment. One hopes that we have the genetic wherewithal to "run
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Unformatted text preview: fast enough just to stay in place" (as the Red Queen suggests we must). All organisms vary and humans are quite good at recognizing nodes or clusters in that variation (demes, populations, species). The nodes or clusters within human phenotypic variation are quite pronounced and most of us would sort the ambassadors to the UN into more-or-less the same "groups". The question thus arises: how is the genetic variation within humans partitioned? This question was asked (and answered) by R. C. Lewontin in 1972 (The apportionment of human diversity. Evolutionary Biology vol. 6: pp. 381-398)....
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