Table 2. The number of significantly collinear regions, the markers contained in these and the proportion of the genome that is covered was determined between Cottus and sequenced fish genomes.
| Collinear blocks (n) | Markers per block | Percentage of Cottus map | |
|---|---|---|---|
| Cottus (within) | 27 | 2–14 | 98.75% |
| Stickleback | 34 | 2–11 | 60.62% |
| Medaka | 26 | 2–8 | 39.15% |
| Fugu | 21 | 3–9 | 32.44% |
| Tetraodon | 21 | 2–9 | 31.59% |
| Zebrafish | 7 | 2–3 | 7.36% |
Conservation of marker order between genomes was assessed by randomizing markers within linkage groups. Besides the almost perfectly conserved marker order between the two Cottus maps studied here, the stickleback shows the highest degree of genome collinearity with Cottus.