a form of natural selection that favors altruistic behavior toward close relatives resulting in an increase in the altruistic individual's genetic contribution to the next generation.
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Words nearby kin selection
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020
British Dictionary definitions for kin selection
biology natural selection resulting from altruistic behaviour by animals towards members of the same species, esp their offspring or other relatives
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012