Erasmus, FCD
Posts: 6349 Joined: June 2007
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Martin Castle and others showed that selection could change characteristics beyond the range of parental variation. this was shown to be consistent with mendelian inheritance. there were many biologists who fought this at the time, but lacked any mathematical rigor to their programs. fisher wright and haldane, among others, eliminated the confusion except for a few holdouts that could not assimilate their views into the evidence from statistical population genetics.
so, no one has ever showed that what you call 'artificial' selection is any different in principle from 'natural' selection. many studies of N.S. provide incontrovertible evidence for the process in nature. again, quantitative studies of pop genetics establish this over and over.
ploidy and lineage contact between genotypes or hybridizing species provides massive amounts of variation that is then fuel for selection. we know this is true from literally thousands of studies involving oeneothera, irises, spartina, populus, quercus, pinus, silene, and many many many more. also in Lycaeneid butterflies, Heliconia butterflies, Rana frogs and many reptiles (geckos invading Florida are a fine example). also Jim roman european green crab invasion in gulf of maine. the jury is not out.
now, the question 'how does mimicry arise' is not answered by these studies. but you don't ask that question honestly, because conflate it with 'how would it be maintained'. i don't know that anyone understands how mimicry arises, for the equation F(genotype)=a+ G(Phenotype) is not solved yet. but in order for you to argue that mimicry can't be maintained requires that you deny everything that is known about heredity and mathematical demonstrations of natural selection.
be honest. you want to know how 'mimicry' can arise, and we do too. but denying the obvious in attempts to disclaim the evo-devo explanations is a wrong tack and it really pisses off anyone who is honestly approaching this question.
-------------- You're obviously illiterate as hell. Peach, bro.-FtK
Finding something hard to believe based on the evidence, is science.-JoeG
the odds of getting some loathsome taint are low-- Gordon E Mullings Manjack Heights Montserrat
I work on molecular systems with pathway charts and such.-Giggles
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