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| Abstract: | Cover: North American Papilio glauscus females nectaring upon bull thistles. The dark (mimetic) wing pattern in females is regulated by both a Z (=X) linked enabler and a W (=Y) linked dark melanism factor which introgress independently across an interspecific hybrid zone with the sister species P. canadensis further north. Across this changing thermal landscape, recombinant homoploid hybrids reflect differential geographic movement for several additional Z‐linked, as well as important autosomal, traits. See page 121. Image: J.M. Scriber |
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