Table 2. Proportions (%) of trajectories that lead to one of the equilibria in the deterministic case.
| Equilibrium | Descriptiona | Constant environment, weak selection | Constant environment, strong selection | Changing environmentb | Optimum changec | General fitnessd |
|---|---|---|---|---|---|---|
| E1 | Polymorphic/symmetric | 1.97 | 21.21 | 2.63 | 0 | 0 |
| E2 + E3 | Polymorphic/unsymmetric | 4.6 | 4.46 | 2.73 | 1.91 | 2.19 |
| E4 | A polymorphic, loss at B | 34.89 | 25.81 | 39.09 | 22.07 | 17.32 |
| E5 | A polymorphic, fixation at B | 0.92 | 0.68 | 2.9 | 3.63 | 4.28 |
| E6 | Fixation at A, loss at B | 31.44 | 31.16 | 41.58 | 7.76 | 14.53 |
| E7 | Loss at A, fixation at B | 10.75 | 10.8 | 9.15 | 25.54 | 12.13 |
| E8 | Loss at A, loss at B | 0 | 0 | 0 | 0 | 14.99 |
| E9 | Fixation at A, fixation at B | 0 | 0 | 0 | 16.22 | 23.99 |
| Sweep at A (fixation in E6)e | 48.03 | 47.79 | 0.48 | 44.85 | 54.44 | |
| Sweep at B (fixation in E5)e | 1.09 | 0 | 0 | 44.08 | 49.07 | |
| Sweep at B (fixation in E7)e | 9.67 | 11.85 | 0.22 | 40.6 | 51.69 | |
| Sweep at A and B (fix. in E9)e | 0 | 0 | 0 | 31.81 | 32.56 | |
| Transient | 13.56 | 4.53 | 0 | 9.79 | 0 | |
| Unclassified | 1.87 | 1.35 | 1.92 | 13.08 | 10.57 | |
| Sweeps total | 16.15 | 16.17 | 0.22 | 20.61 | 24.09 |
a
The equilibria E1–E9 are defined following Bürger (2000, p. 205).
b
Environmental changes were defined by random change of the original effects and selection coefficient.
c
In the shifted optimum model (see Models) the phenotypic optimum takes an arbitrary position 0 < θ < 1.
d
In the general fitness model the effects have arbitrary values sampled from (0, 2) such that A is major locus.
e
Selective sweeps are defined here as trajectories that lead to fixation from very low initial frequencies (<0.01). Numbers denote the proportions of fixations with initial frequencies <0.01.