Summaries of the Distributions of Homologous Family Size Ratios
| Ratio | C. elegans:yeast | Drosophila:yeast | Human:yeast | C. elegans:Drosophila | Human: Drosophila |
| <1:1 | 92 (16.5%) | 93 (14.5%) | 163 (22.8%) | 250 (18.6%) | 195 (7.1%) |
| 1:5 | 2 (0.4%) | 3 (0.5%) | 2 (0.3%) | 8 (0.6%) | 7 (0.3%) |
| 1:4 | 0 (0.0%) | 0 (0.0%) | 6 (0.8%) | 7 (0.5%) | 12 (0.4%) |
| 1:3 | 6 (1.1%) | 8 (1.3%) | 12 (1.7%) | 30 (2.2%) | 16 (0.6%) |
| 1:2 | 66 (11.9%) | 69 (10.8%) | 106 (14.8%) | 117 (8.7%) | 94 (3.4%) |
| 1:1 | 342 (61.4%) | 408 (63.8%) | 337 (47.1%) | 897 (66.9%) | 1180 (42.7%) |
| >1:1 | 123 (22.1%) | 139 (21.7%) | 216 (30.2%) | 194 (14.5%) | 1386 (50.2%) |
| 2:1 | 64 (11.5%) | 74 (11.6%) | 79 (11.0%) | 101 (7.5%) | 489 (17.7%) |
| 3:1 | 15 (2.7%) | 20 (3.1%) | 33 (4.6%) | 19 (1.4%) | 265 (9.6%) |
| 4:1 | 5 (0.9%) | 5 (0.8%) | 10 (1.4%) | 9 (0.7%) | 136 (4.9%) |
| 5:1 | 2 (0.4%) | 5 (0.8%) | 6 (0.8%) | 5 (0.4%) | 78 (2.8%) |
| Total | 557 | 640 | 716 | 1341 | 2761 |
| Mean | 1.35 | 1.24 | 1.56 | 1.18 | 2.19 |
| Minimum | 1:5 | 1:5 | 1:10 | 1:16 | 1:15 |
| Maximum | 31:1 | 13:1 | 167:3 | 52:1 | 53:1 |
| Kolmogorov-Smirnov two-sample tests | P < 0.05a | P< 0.025a | P < 0.001b |
[i] Kolmogorov-Smirnov two-sample test of the equality of the underlying distributions with that of human:yeasta; that of human:Drosophila b.