TABLE 2.
Power to detect QTL × genetic background interaction, mean estimate of the epistatic variance 
and mean squared error (MSE) of the estimate over 500 simulations for the simulation settings given in the text
| Setting | Population |  |
Power (%) |  |
MSE | Bias2 | Variance |
|---|---|---|---|---|---|---|---|
| 1 | 320 | 20 | 78.8 | 20.6 | 68.9 | 0.4 | 68.5 |
| 2 | 640 | 20 | 97.0 | 20.2 | 30.0 | 0.0 | 30.0 |
| 3 | 320 | 5 | 9.2 | 5.5 | 22.9 | 0.2 | 22.7 |
| 4 | 640 | 5 | 19.0 | 4.9 | 11.6 | 0.0 | 11.6 |
| 5 | 320 | 20 | 74.1 | 19.5 | 58.6 | 0.3 | 58.4 |
| 6 | 320 | 20 | 39.8 | 13.3 | 111.8 | 45.0 | 66.8 |
| 7 | 320 | 0 | 2.2 | 3.1 | 24.5 | 9.3 | 15.1 |
| 8 | 320 | 20 | 76.4 | 21.2 | 63.5 | 1.5 | 62.0 |