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@3rdreviewer @PolyploidPapers I am at the "there is evidence consistent with a WGD, but not yet a slam dunk" stage for the spider WGD. Only a couple of these analyses look broadly at synteny and find large blocks in a couple of different species. The paper
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The house spider genome reveals an ancient whole-genome duplication during arachnid evolution https://t.co/kimCvz8ppm
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@AncestralState @realBenJen In animals, there best described are 1) two rounds in vertebrates (2R) with more afterwards in teleosts, and 2) a recently discovered in chelicerates (independently in horseshoe crabs and arachnopulmonates) https://t.co/gij1T4R