3. Chromosome 7.
| F1 genotype | 0 | 1 | 2 | 1,2 | Total |
| in + + | 890 | 30 | 99 | 8 | 1017 |
| + v5 gl1 | 3.4% | 11.3% | 0.9% | ||
| in - 4.3 - v5 - 12.2 - gl1 | |||||
| in gl1 + | 81 | 12 | 23 | 7 | 123 |
| + + ij | 9.8% | 18.7% | 5.7% | ||
| in - 15.5 - gl1 - 24.4 - ij | |||||
A number of seedlings in the latter cross were destroyed by mice in early stages. Counts are not dependable for distances but they are consistent with the order in the first cross.
A. C. Fraser