Dictionary

kin selection

noun

Definition of KIN SELECTION

:  a theory of natural selection which states that a usually altruistic behavior or attribute that lowers the fitness of a particular individual is selected for if it increases the probability of survival and reproduction of related kin who possess some or all of the same genes as the altruistic individual

First Known Use of KIN SELECTION

1975

kin selection

noun \ˈkin-\   (Medical Dictionary)

Medical Definition of KIN SELECTION

:  a theory of natural selection which states that a usually altruistic behavior or attribute that lowers the fitness of a particular individual is selected for if it increases the probability of survival and reproduction of related kin who possess some or all of the same genes as the altruistic individual

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