GO term-specific π
analysis in C. nigra and E. orbicularis . Each circle is for a GO-slim term. Circle surface is proportional to the number of associated coding sequences. Left panel: term-average πN/πS ratio in log scale; black square: genomic averages. Right panel: term-specific z-score. Colored circles: z-score significant at the 10% (open) or 5% (close) level. Blue: macromolecule metabolism; cyan: metabolism (other); purple: response to stress; red: immunity. Dotted lines: standard deviation. Letters refer to Additional file 3: Table S1, first colon.