Figure 4

IBD-sharing probabilities R _ij ( l ) for six pairs of individuals from generation 0. These individuals can be found from Figure 1 where the indexes increase from right to left (from 1 to 39). The two leftmost panels illustrate the IBD-sharing profiles of full-siblings, the upper panel in the middle is of a pair of first cousins, and the lower one describes half cousins. The two rightmost panels show the IBD-sharing between the most distant relatives that can be found in the data. The dotted lines are the exact values and the solid lines our estimates.