Fig. 3.
Observed (blue line) versus simulated (green and yellow surface areas) KS distributions for some GO classes discussed in the text. The parameters in the upper right corners of each graph specify the simulated decay rates for the continuous mode of gene duplication (α0) and for the whole-genome duplications 1R (α1), 2R (α2), and 3R (α3) and their confidence intervals (Table 2). The colored areas show the simulated fraction of retained duplicates created by each duplication mode as a function of KS. Similar graphs for other functional classes can be found in Fig. 10, which is published as supporting information on the PNAS web site.