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Ch18

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Total cards: 8•Content version: v4•Public deck•Updated: 8/1/2026

Card preview (8)

#1
Front (Question)

define Cooperation

Back (Answer)

Two or more individuals receive a net benefit from their joint actions

#2
Front (Question)

can natural selection favor cooperation?

Back (Answer)

yes, but not always since free-riding is more beneficial

#3
Front (Question)

list the Attributes of Eusociality

Back (Answer)

(1) Reproductive division of labor (2) Cooperative rearing (3) Overlapping generations * evolved multiple times in animals & Hymenoptera

#4
Front (Question)

Individuals benefit by exchanging acts of…

Back (Answer)

Reciprocal altruism, might be favored by ns

#5
Front (Question)

define Nash equilibrium

Back (Answer)

applies if neither player benefit by changing strategy

#6
Front (Question)

define Trait-group

Back (Answer)

group in which all individuals affect one another’s fitness. Many trait-groups make up a population

#7
Front (Question)

define Within-group natural selection

Back (Answer)

acts against cooperators who pay some cost while others do not

#8
Front (Question)

define Between-group natural selection

Back (Answer)

favors cooperation, as groups that cooperate more outproduce other groups