Experimental sexual selection reveals rapid evolutionary divergence in sex-specific transcriptomes and their interactions following mating.

Examination of the 80 accessory gland genes that were differentially expressed between treatments, regardless of set, showed we found only a nonsignificant trend towards higher expression in polyandry males (Figure 2b ).

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There was also a weak trend for monandry, not polyandry, males to upregulate testes genes and accessory gland genes with secretory signals. 3.2 Sexual selection causes gene expression divergence in virgin female reproductive tissues Similar to males, we tested whether monandry selects for downregulation and polyandry selects for upregulation of genes (Hollis et al., 2016 ) in virgin female reproductive tissues (FRT and ovaries), such that polyandry females are more poised for subsequent mating.

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