Fig. 3

Orthology and homology assignments of A. glabripennis genes with those of 14 other insect species. A conserved core of about 5000 orthologs per species (5029 A. glabripennis genes) is maintained in orthologous groups with gene members from all 15 species, about half with a single gene (dark purple) and half with multiple copies (light purple). A variable fraction of genes is less well maintained but still widespread (green) with orthologs in at least two species from each of the three sets of insect species. Lineage-restricted genes include those with orthologs only within each set (pink), with recognizable homology to other arthropod genes (white) or their own genes (cyan), or without any significant homology (gray). The numbers of orthologous groups (OGs) are shown with area-proportional boxes for the set intersections and the lineage-restricted orthologs. See “Methods” for orthology classification details