Genomic evidence that a sexually selected trait captures genome-wide variation and facilitates the purging of genetic load

Jonathan Parrett, Sebastian Chmielewski, Eylem Aydogdu, Aleksandra Łukasiewicz, Stephane Rombauts, Agnieszka Szubert-Kruszyńska, Wiesław Babik, Mateusz Konczal & Jacek Radwan
The evolution of costly traits like deer antlers and peacock trains, which drove the formation of Darwinian sexual selection theory, has been hypothesised to both reflect and affect patterns of genetic variance across the genome, but direct tests are missing. Here, we used an evolve and re-sequence approach to reveal patterns of genome-wide diversity associated with the expression of a sexually-selected weapon that is dimorphic among males of the bulb mite, Rhizoglyphus robini. Populations selected...
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