Distributions of all hits from eukaryotic groups to each heterokont genome. Number of times each designated group is the first to be hit in BLAST searches, through the number of times it yields the sixth hit, are shown from back to front of each graph. Clockwise from the upper left, panels show P. ramorum, Thalassiosira, Phaeodactylum and P. sojae. In each case, defined groups appear in rank order of database size from left to right. The exception is the sister heterokont group, which is shown inset and next to amoebozoans, the unrelated control group with the nearest-sized database.