Ancestral haplotype reconstruction in endogamous populations using identity-by-descent
Fig 5
Given a cohort of five individuals sharing an IBD segment (orange), we often obtain multiple sources (blue nodes) and multiple descendance paths (blue lines) from each source. In this example we have 11 total paths from three sources. After we choose a source, we assign the IBD segment to ancestors along all descendance paths (light orange). (A) One path from source ℓ. (B)-(C) Two different descendance paths from the same source pq. We would not assign the IBD to d and e since they are not on all paths from this source.