Results of cis -only analysis. Histogram of genetic lengths (A) and marker numbers (B) of 3554 cis regions. C, number of positive findings and expected false positives using our corrected method. D, Estimated FDR curve. We identified 46 significant cis linkages at threshold of region-wide p = 0.00036 or log(p) = -7.93 (FDR = 10%).