Fig. 2

Genome-wide combined linkage and association results from a omnibus, b LIQ, and c NIQ analyses. The PPLD (posterior probability of LD) represents the probability of allelic association with ASD due to LD for each SNP in turn, and utilizes both linkage information from the multiplex families and association information from the trios. The x-axis represents the physical map for chromosomes 1–23 (X); the y-axis is on the probability scale. An additional 151 markers from the pseudoautosomal region of X are not shown on the graph; none had PPLD exceeding the prior probability of LD