Table 4. Variability of age at death in recombinant strains of mice, B allele for broad variability, and D allele for narrow variability.
| Broad | Strains | Median | Mean | SD | Range |
| 1 | 519 | 394 | 261 | 803 | |
| 5 | 452 | 528 | 317 | 920 | |
| 11 | 847 | 750 | 266 | 950 | |
| 12 | 774 | 738 | 209 | 907 | |
| 16 | 617 | 642 | 191 | 862 | |
| Narrow | 6 | 641 | 680 | 115 | 366 |
| 18 | 750 | 742 | 140 | 483 | |
| 28 | 775 | 765 | 104 | 331 | |
| 29 | 704 | 703 | 114 | 349 | |
Summary statistics * [44].