| Number of groups produced | Number of genes* | Degree of conservation | ||
---|---|---|---|---|---|
Duplication event |  | Total | Unpaired | Conserved | (%)†|
B. rapa | Â | Â | Â | Â | Â |
   3R event | 33 | 2,017 | 1,623 | 394 | 19.5 |
   4R event | 18 (3) | 651 (112) | 367 (58) | 284 (54) | 43.6 (48.2) |
   Segmental duplication | 1 (1) | 24 (28) | 4 (0) | 20 (28) | 83.3 (100) |
B. oleracea ‡ |  |  |  |  |  |
   3R event | 9 | 310 | 196 | 114 | 36.8 |
   4R event | 6 | 217 | 81 | 136 | 62.7 |