inclusive fitness

American  

noun

Biology.

1. the fitness of an individual organism as measured in terms of the survival and reproductive success of its kin, each relative being valued according to the probability of shared genetic information, an offspring or sibling having a value of 50 percent and a cousin 25 percent.

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Example Sentences

The lowering of individual fitness to enhance the reproductive fitness of a relative and thus one’s inclusive fitness evolves through kin selection.

From Textbooks • Jun. 9, 2022

“The basic foundations of inclusive fitness theory are unsound,” Dr. Wilson said in a 2012 interview.

From New York Times • Dec. 27, 2021

In this, Wilson is very much in the minority; Richard Dawkins has called his criticisms of inclusive fitness “downright perverse.”

From The New Yorker • Sep. 10, 2018

In the final analysis, multilevel selection is little more than a rebranding of Hamilton’s inclusive fitness.

From Scientific American • Jul. 9, 2012

One of the key ideas to explain this has been kin selection theory or inclusive fitness, which argues that individuals cooperate according to how they are related.

From Slate • Apr. 30, 2012