Figure 1

Results of analysis 1: relationship IBD estimation within and between the 20 SAFS families using PREST-plus. The figures are stratified by the null putative relationship, R ₀ , as defined by the given pedigrees. The red cross marks the expected IBD distribution for R ₀ as provided in Table 1. Each black dot shows the estimated p ₁ vs. p ₀ based on the obseved genotype data for each of the 455,535 genotyped pairs analyzed, inlucidng 1091 full-sib, 162 half-sib, 360 grandparent-grandchild, 2269 avuncular, 2717 first-cousin, 440,546 unrelated (from both within and across families), 402 half-avuncular, 559 half-first cousin, 2 half-sib+first cousin, 957 parent-offspring, and 6470 other types of pairs. Blue circles mark the obvious outliers as detailed in Table 2.