Males of some species sometimes cooperate in acquiring a mate, but then only one of the group actually does most or all of the mating. For example, among wild turkeys (Meleagris gallopavo), male turkey brothers form a sibling unit that will remain stable until death, within which only the dominant male mates. Further, sibling units then compete to establish a hierarchy between units. Research by Krakauer (2005) suggests that the subordinate males provide their cooperative support as a result of

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Quizplus · Accepted Answer

The correct answer is kin selection. This concept explains how individuals can increase their own genetic success through the reproductive success of their relatives, even if it means they themselves do not reproduce. In the case of wild turkeys, subordinate males help their dominant brother mate, thereby ensuring their shared genes are passed on to the next generation.

Males of Some Species Sometimes Cooperate in Acquiring a Mate