Linkage disequilibrium patterns within the sparrow genome. A. Patterns of LD between alleles among autosomal loci (excluding ZAL2/2m data) show that LD is generally very low and decreases slightly with distance (See Additional file 4). B. A histogram indicates that the majority of pairwise comparisons among autosomal loci have 0 < r2 ≤ 0.1. C. Patterns of LD between alleles among ZAL2/2m loci show high LD spanning > 100 Mb. D. A histogram indicates that the vast majority of pairwise comparisons within the ZAL2/2m inversion show high r2, 0.9 < r2 ≤ 1.