Figure 3.

Linkage disequilibrium (LD) pattern for 53 significant SNPs on chromosome one. Note: the solid line triangle indicates LD. One square indicates LD level (r²) between two SNPs, and the squares are colored by the D’ & LLOR standard scheme. D’ & LLOR standard scheme is that red indicates LLOR > 2, D’ = 1; pink indicates LLOR > 2, D < 1; blue indicates LLOR < 2, D’ = 1; and white indicates LLOR < 2, D’ < 1. LLOR is the logarithm of likelihood odds ratio and the reliable index to measure D’.