Definition of Variables
| Variable name | Definition (kb/Mb unless otherwise stated) |
| L | Ordinal location of 500-kb segment from q11.21 |
| MD | Male cM/Mb |
| FD | Female cM/Mb |
| AD | Sex average cM/Mb |
| GD | Confirmed and predicted genes No./Mb |
| RD | Centri-ray 3000 rads/Mb |
| CpG | CpG island counts/Mb |
| GC | G + C content |
| REP | Length of tandem repeats (10–100bp element, 0.03–5 kb total size) |
| RAT | Length of tandem repeats (10–100bp element, 0.03–5kb total size) >60% AT |
| RGC | Length of tandem repeats (10–100bp element, 0.03–5 kb total size) >60% GC |
| SINE | (Short Interspersed Nuclear Elements) Length of ALUs + MIRs |
| LINE | (Long Interspersed Nuclear Elements) Length of LINE repeats |
| LTR | (Long Terminal Repeats) Length of MaLRs, Retrovires and Mer 4 group repeats |
| EL | DNA elements Lengths of MER1 + MER2 + Mariners repeats |
| SI | Length of simple repeats |