highly significantP < 0.0001
Finally, logistic regressions show no significant relationships between phenotypic and environmental values at the outset (pseudo- R 2 s ≈ 0.0, P values > 0.1), but show highly significant relationships at the ends of the simulations ( P < 0.0001 for all values of Φ), with the amounts of variation explained increasing as a function of selection strength (pseudo- R 2 = 0.327 for Φ = 0.01, 0.376 for Φ = 0.05, and 0.406 for Φ = 0.1).