Classification of the characteristics of the BDTs of maize. A, C, and E: Multi-level pie charts of cellular components (CC), molecular functions (MF), and biological processes (BP) respectively. B, D, and F: Combined graphs of CC, MF, and BP respectively. Combined Graphs were generated by filtering the annotated sequences using the node sequence filter (>10% of the total number of sequences) and score filter (>100) together. Parent nodes that did not annotate more sequences than their children terms were omitted from the graph. Multi-level pie charts were derived from Combined Graphs that displayed only the lowest GO terms per branch. Node coloring by score value highlights the areas in which annotations are most concentrated.