Table 1.

Numerical example of IBD probability matrix Q among six inbred individuals (A) and the corresponding probability matrix P for the latent ancestor model (LAAM) (B). The IBD status matrix Q _TIBD (C) and the corresponding ancestor assignments (P _TIBD) for the threshold model (D), where the IBD status of pair I₄–I₆ has been adjusted for reason of transitivity. The assignments correspond to the example given in Fig. 1