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Domestication as gene-culture coevolution.

Chase Van Amburg·Drew Babel·Marcus W Feldman
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Abstract

Human preferences can shape the genetic evolution of other species via conservation practices, public health actions, and domestication. While the dynamics of domestication have been explored in depth through empirical and theoretical analyses, few studies have analyzed models for the coevolution of human cultural preferences with the genetics of a domesticate population. Humans shape the fitness landscape of domesticate populations both intentionally and unconsciously, by selecting for desirable traits and modifying environments; in turn, changes in domesticate phenotypes can affect the cultural preferences in the domesticator population. We present a model for the dynamics of domestication which includes interactions between genetic evolution, cultural transmission, and selective pressures. The model includes forms of selection due to culturally transmitted domesticator preferences that can affect the dynamics of domesticate genetic variants, which then affect the dynamics of domesticators. Equilibria with simultaneous genetic and cultural polymorphisms may exist, and may occur under apparent heterozygote disadvantage in the domesticate. Stable quasiperiodic cycles in both domesticates and domesticators are also possible.

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HumansDomesticationSelection, GeneticModels, GeneticAnimalsEvolution, MolecularGenetic VariationBiological EvolutionCultural Evolutioncultural preferencesdomesticationgene–culture coevolutionheterozygote advantagetarget of selectionJournal Article

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Chase Van Amburg, Drew Babel, Marcus W Feldman. 2026-09-15. Domestication as gene-culture coevolution.. https://doi.org/10.1073/pnas.2620741123

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