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Unformatted text preview: could view such hybrid zones as genetic canyons of lost alleles. Another important question: if selection against hybrids is the driving force for reproductive character displacement, how will the genes for the different components of isolation/recognition sweep through the allopatric regions of the two species ranges where there is no hybridization, hence no selection? Another allopatric model is the Peripatric model referring to populations surrounding the main part of the current species range. See fig. 16.5, pg 434....
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- Fall '10