Extended phenotype

The Extended Phenotype (subtitled "The Gene as the Unit of Selection", and later, "The Long Reach of the Gene") is a 1982 book by Richard Dawkins. A revised edition was published in 1999 with an afterword by the philosopher Daniel Dennett. Dawkins considers the concept of the Extended Phenotype to be his principal contribution to evolutionary theory.
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All effects of a gene upon the world where the effects influence the survival chance of a gene [Richard Dawkins].