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Example pedigree illustrating transitions from state 20 in the presence of first-cousin consanguinity. Considering a pair of lineages in a mating pair, depicted in blue, the process always immediately transitions to the holding state 21. From state 21, the lineages can potentially transition to any of states 0, 1, 20, 3, 4, or 5, depending on the type of first-cousin consanguinity. Matrilateral-cross consanguinity is depicted.
