Chapter 6: Genesmanship

Genesmanship , titled Genesmanship, expands the definition of the selfish gene from a single physical piece of DNA to a distributed agency present in multiple individuals, establishing the genetic basis for altruistic behavior among relatives. Richard Dawkins explores the concept of kin selection, primarily grounded in the mathematical work of W.D. Hamilton, to explain why organisms often sacrifice their own survival resources to assist genetic relatives. The text illustrates how genes theoretically program survival machines to behave like insurance underwriters, performing unconscious cost-benefit analyses where the risk to the self is weighed against the benefit to the recipient, discounted by the coefficient of relatedness (for example, one half for siblings and parents, or one quarter for grandparents and half-siblings). While theoretical markers like the Green Beard Effect are discussed as unlikely mechanisms for recognizing gene copies, the chapter argues that probabilistic kinship is the primary driver of altruism in nature. Significant attention is given to the critique of E.O. Wilson’s definition of kin selection, clarifying that it is a consequence of gene selection rather than a subset of group selection. The discussion further examines the asymmetries in altruism, such as why parents are more dedicated to offspring than siblings are to one another despite sharing the same genetic relatedness; this is attributed to the index of certainty and the asymmetry in life expectancy. The chapter concludes by analyzing behavioral strategies and evolutionary stable strategies (ESS) regarding cheating and identification, utilizing examples such as the brood parasitism of cuckoos, the egg recognition of guillemots, lion pride dynamics, and the distinct roles of maternal versus paternal kin due to the certainty of parenthood.