Functional annotation clustering of differentially expressed genes in mated queen spermatheca vs. virgin queen spermatheca using the online tool DAVID [50,51].

Recognized gene clusters were identified using the lowest stringency of the software's Functional Annotation Clustering settings. The reported genes are those that were clustered and had an FDR value S4 Table for a complete list of all the genes that were differentially expressed between mated queen spermatheca and virgin queen spermatheca. (XLSX)