Figure 1From: Application of seventeen two-locus models in genome-wide association studies by two-stage strategySeventeen two-locus models. A and B are the high-risk alleles in the two markers. For the epistatic models, α and β are the penetrances. For the multiplicative models, the symbol in each cell denotes the relative risk of this cell. φ = θ2, ρ = θ3, and γ = θ4.Back to article page