EUSOCIALITY

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Kin Selection & Social Evolution

Why an animal helps others breed — kin selection and Hamilton's rule, inclusive fitness, haplodiploidy, altruism, and the debate over group selection.

Kin selection

Kin selection

Hamilton's rule

Hamilton's rule

Haplodiploidy

Haplodiploidy

Group selection

Group selection

Reciprocal altruism

Reciprocal altruism