Genetic correlation (Rho) between a Gaussian character and a mixture trait for a two-component mixture, as a function of the mixing proportion (), for different combinations of ρhomo, genetic correlation in absence of mixture, and λ, heteroscedasticity factor. From top to bottom: (1) ρhomo = 0.7, λ = 1.5 (open squares); (2) ρhomo = 0.7, λ = 2 (dotted line); (3) ρhomo = 0.3, λ = 1.5 (solid line); (4) ρhomo = 0.3, λ = 2 (open circles).