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. 2014 Oct;6(10):a017541. doi: 10.1101/cshperspect.a017541

Table 3.

Model I: Kin selection in which sons assist sisters

Sire Dam Frequency Family fitness Sons Daughters
Family
C1 C1 PP +QP f 1 + sF♂(1 + s) 1 + s 1 + s
C1 C2 PQ(1 – f) 1 1 1
C2 C1 QP(1 – f) 1 + sF♂(1 + s) 1 + s 1 + s
C2 C2 QQ + PQf 1 1 1