|  | Genomic Location |  |
---|---|---|---|
 | Intergenic | Intronic | Mixed |
 |  | Group I |  |
Human-Mouse-Rat | 114 | 66 | 66 |
 |  | Group II |  |
Human-Mouse | 20 | 28 | 7 |
Human-Rat | 3 | 0 | 0 |
Mouse-Rat | 18 | 4 | 4 |
 |  | Group III |  |
Human | 67 | 16 | Â |
Mouse | 13 | 32 | Â |
Rat | 1 | 3 | Â |
 |  | Group IV |  |
Human | 47 | 107 | Â |
Mouse | 31 | 35 | Â |
Rat | 1 | 4 | Â |