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. 2012 Aug 14;7(8):e42744. doi: 10.1371/journal.pone.0042744

Table 2. Mating frequencies for all possible matings.

♂×♀ mating frequency ♂×♀ mating frequency
TN×TN Inline graphic tN×TN Inline graphic
TN×Tn Inline graphic tN×Tn Inline graphic
TN×tN Inline graphic tN×tN Inline graphic
TN×tn Inline graphic tN×tn Inline graphic
Tn×TN Inline graphic tn×TN Inline graphic
Tn×Tn Inline graphic tn×Tn Inline graphic
Tn×tN Inline graphic tn×tN Inline graphic
Tn×tn Inline graphic tn×tn Inline graphic

In this model, α 1 is the rate of assortment if the choosing parent is N, and α 2 is the rate of assortment if the choosing parent is n. The choosing parent is listed first for each mating. On the right side of the equations, the first term represents the frequency of random matings and the second term the frequency of assortative matings.