Table 2. Competition between a recombining (#1) and non-recombining population (#2): effects initial variability, recombination rate, and fitness costs of recombination.
| Runs initiated with a monomorphic 2,2,2,2,2 population Freq of #1/χ/s | Runs where # 1 Wins (TF±SE) | Runs where # 2 Wins (TF±SE) | Runs with #1 Winning at T = 2000 | Runs with #2 Winning at T = 2000 |
| 0.5/5×10−15/0.01 | 50 * (1180±60) | 0 | 0 | 0 |
| 0.05/5×10−15/0.01 | 9 * (1151±9 )++ | 41 (726±47) | 0 | 0 |
| 0.005/5×10−15/0.01 | 0 | 50 (424±18) | 0 | 0 |
| 0.5/5×10−15/0.01 | 2 (1351) | 47 (747±33) | 0 | 1 |
| 0.5/5×10−15/0.02 | 0 | 50 (391±82) | 0 | 0 |
| 0.5/5×10−14/0.02 | 0 | 50 (389±5) | 0 | 0 |
| 0.5/5×10−13/0.02 | 0 | 50 (378±2) | 0 | 0 |
| 0.95/5×10−15/0.02 | 1 | 48 (720±35) | 0 | 1 |
| 0.95/10−8/5×10−14/0.02 | 5 (960±65)++ | 43 (732±47) | 1 | 1 |
| 0.95/10−8/5×10−13/0.02 | 23 * (1023±47)++ | 25 (739±34) | 2 | 0 |
| 0.5/5×10−15/0.01 Cont. | 0 | 100 (642±8) | 0 | 0 |
| 0.5/5×10−15/0.02 Cont. | 0 | 100 (398±4) | 0 | 0 |
| 0.05/5×10−15/0.00 Cont. | 0 | 100 (479±12) | 0 | 0 |
| 0.005/5×10−15/0.00 Cont. | 0 | 100 (432±7) | 0 | 0 |
Number of times each population Wins (the density of the competing population falls below 105) or is Winning (is the dominant population at the 2000th generation) in 50 or 100 independent runs. TF is the mean number of generations before the density of the losing population falls below 105 ±SE: standard error.
In all these simulations, μ = 10−8, c = 0.5, e = 1, and NT = 2×108. The initial frequencies and selection coefficients, s, are for the #1 population. The simulations labeled Cont. are controls in which both the #1 and #2 populations recombine with a rate constant X = 10−15. In the experimental runs, there is no recombination in the # 1 population.
*significant with p<0.002 (X2 contingency table comparing number of wins of #1 and #2 in treatments vs. control).
++: significant with p<0.005 (Student's t-test comparing TF between Population 1 and Population 2 within treatment).