kin selection
noun
: 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
Example Sentences
Recent Examples on the Web The author compares her own model of altruism with other evolutionary explanations currently in vogue, notably kin selection, in which supposed altruists are in fact working for the survival of genes located within their relatives. 
David P. Barash, WSJ, 6 May 2022 One is kin selection, which requires the collaborators to be related (as neighbouring trees of the same species are likely to be) and works if sacrifices by one bring disproportionate reproductive benefits to others. The Economist, 25 July 2019 The Hymenoptera stood for years as the textbook example of kin selection’s potency, and many biologists got on board with it. Quanta Magazine, 10 Apr. 2018 For kin selection, that’s direct versus indirect benefits. Jordana Cepelewicz, Scientific American, 26 Apr. 2018 The framework of inclusive fitness theory provides a good way to envision the role played by kin selection and relatedness. Jordana Cepelewicz, Scientific American, 26 Apr. 2018 The new model could even be applied to research on kin selection in plants. Jordana Cepelewicz, Scientific American, 26 Apr. 2018 Others help genetic relatives in a motivation called kin selection. Lynn Johnson, National Geographic, 3 Jan. 2018 See More
David P. Barash, WSJ, 6 May 2022 One is kin selection, which requires the collaborators to be related (as neighbouring trees of the same species are likely to be) and works if sacrifices by one bring disproportionate reproductive benefits to others. The Economist, 25 July 2019 The Hymenoptera stood for years as the textbook example of kin selection’s potency, and many biologists got on board with it. Quanta Magazine, 10 Apr. 2018 For kin selection, that’s direct versus indirect benefits. Jordana Cepelewicz, Scientific American, 26 Apr. 2018 The framework of inclusive fitness theory provides a good way to envision the role played by kin selection and relatedness. Jordana Cepelewicz, Scientific American, 26 Apr. 2018 The new model could even be applied to research on kin selection in plants. Jordana Cepelewicz, Scientific American, 26 Apr. 2018 Others help genetic relatives in a motivation called kin selection. Lynn Johnson, National Geographic, 3 Jan. 2018 See More Word History
First Known Use
1975, in the meaning defined above
Medical Definition
kin selection
noun
ˈkin- 
: 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