Table 2.
Results of crosses and treatments of female progeny in the same manner as for the results shown in Table 1, except that the parents were up-river fish, showing the evidence for a genetic difference in the recombination rate between the sex-determining locus and the partially sex-linked Sb factor in the up- and down-river populations [44]. The colours and symbols are explained in the legend of Table 1.
| Males | Females | Male parent genotype | ||
|---|---|---|---|---|
| Sb | Non-Sb | Sb | Non-Sb | |
| 6 | 0 | 1 | 10 | X(−)/Y(Sb) |
| 8 | 0 | 0 | 15 | X(−)/Y(Sb) |
| 12 | 0 | 0 | 20 | X(−)/Y(Sb) |
| 14 | 0 | 0 | 2 | X(−)/Y(Sb) |
| 13 | 0 | 0 | 14 | X(−)/Y(Sb) |
| 11 | 0 | 0 | 3 | X(−)/Y(Sb) |
| 12 | 0 | 0 | 6 | X(−)/Y(Sb) |
| 7 | 0 | 0 | 8 | X(−)/Y(Sb) |
| 0 | 15 | 4 | 0 | X(Sb)/Y(−) |
| 3 | 11 | 10 | 0 | X(Sb)/Y(−) |
| 1 | 10 | 14 | 0 | X(Sb)/Y(−) |
| 0 | 10 | 7 | 0 | X(Sb)/Y(−) |
| 17 | 0 | 21 | 0 | X(Sb)/Y(Sb) |
| 7 | 0 | 8 | 0 | X(Sb)/Y(Sb) |
| 9 | 0 | 17 | 0 | X(Sb)/Y(Sb) |
| 5 | 0 | 3 | 0 | X(Sb)/Y(Sb) |
| 6 | 0 | 5 | 0 | X(Sb)/Y(Sb) |
| 10 | 0 | 5 | 0 | X(Sb)/Y(Sb) |
| 14 | 0 | 13 | 0 | X(Sb)/Y(Sb) |
| 155 | 46 | 108 | 78 | 387 |