Distribution of Homozygous and Heterozygous Segregations Among 239 Strains Isolated from 38 Fermentations
| Trait | +/+ | +/− | −/− |
| Sucrose fermentation | 231 | 2 | 6 |
| Maltose fermentation | 201 | 22 | 16 |
| Galactose fermentation | 193 | 20 | 26 |
| Growth on minimal medium | 228 | 11 | 0 |
| Growth on glycerol | 210 | 29 | 0 |
| Copper resistance/sensitivity | 43 | 63 | 133 |
| Production of sulfides | 188 | 47 | 4 |
| Homothallism/heterothallism* | 185 | 28 | 26 |
| Yellow/White on BTB | 217 | 22 | 0 |
| Lethal mutations* | 165 | 74 | 0 |
| Growth rate mutations* | 225 | 14 | 0 |
[i] (*) Strains that sporulate on rich media.