Probes Used in the Study
| Probe | Genetic data (cM) | Radiation hybrids data (cR) | |
| E | YAC 816E6 | 0 | 3 |
| F | YAC 922A5 | 36 | |
| G | YAC 823G12 | 57 | 134–139 |
| H | YAC 763A12 | 60 | 172 |
| D | YAC 748D2 | 65 | |
| C | YAC 906G6 | 84 | |
| B | YAC 945F5 | 87 | 318 |
| A | YAC 747B3 | 93–94 | 338 |
| I | YAC 750C6 | 117 | 414 |
| L | YAC 756E10 | 128 | 426 |
| M | YAC 758F1 | 136–143 | 458 |
| N | PAC 835J22 | ABL locus |
[i] The FISH probes are reported according to their order along human chromosome 9. The order has been confirmed by data derived from STSs lying inside each YAC (MIT database) and reported in Genetic data and in Radiation hybrids data. An uppercase letter identifies each probe (column 1), and was arranged so that the ascending sequence from A to N corresponds to the hypothesized physical order in the ancestral chromosome IX (Fig. 2). The YACs 763A12 and 748D2 have been chosen because they are very close to the centromere on p and q side, respectively (see MIT database).