Table 2. Presence (+) of a supernumerary tooth (mesial to the first molar) in Rsk mutant mice.
| Mouse | Genotype | Upper Right | Upper Left | Lower Right | Lower Left |
| 11 | Rsk2-/Y | + (4) | + (4) | + (4) | N |
| 25 | Rsk2-/Y | + (4) | + (4) | N | + (4) |
| 37 | Rsk2-/Y | + (4) | + (4) | + (4) | N |
| 39 | Rsk2-/Y | + (4) | + (4) | N | N |
| 46 | Rsk2-/Y | + (4) | N | N | N |
| 61 | Rsk2-/Y | + (4) | + (4) | N | N |
| 62 | Rsk2-/Y | N | + (4) | N | N |
| 150 | Rsk2-/Y | + (4) | + (4) | + (4) | + (4) |
| 155 | Rsk2-/Y | + (4) | + (4) | + (4) | + (4) |
| 184 | Rsk2-/Y | + (4) | + (4) | + (4) | + (4) |
| 185 | Rsk2-/Y | + (4) | + (4) | N | N |
| 700 | Rsk2-/Y | N | N | N | + (4) |
| 702 | Rsk2-/Y | N | N | N | N |
| 728 | Rsk2-/Y | + (4) | N | N | N |
| 731 | Rsk2-/Y | N | N | N | N |
| 789 | Rsk1,2,3-/- | + (4) | + (4) | N | N |
| 793 | Rsk1,2,3-/- | + (4) | N | N | N |
| 860 | Rsk1,2,3-/- | + (4) | N | + (4) | N |
| 883 | Rsk1,2,3-/- | + (4) | + (3) | N | N |
| 1105 | Rsk1,2,3-/- | + (4) | N | N | N |
| 1111 | Rsk1,2,3-/- | + (3) | + (3) | + (4) | N |
| 1283 | Rsk1,2,3-/- | + (3) | + (4) | N | N |
| 1139 | Rsk1,2,3-/- | + (3) | + (4) | N | N |
| 1159 | Rsk1,2,3-/- | + (4) | + (3) | N | N |
N: normal pattern of 3 molars M1, M2, M3. (3) means the presence of only 3 molars but the size of the second one is bigger (most probably there is a supernumerary tooth ST in front of M1, and M3 is missing).