Published online by Cambridge University Press: 07 November 2024
Why is divorce heritable? It’s clear that it is heritable, in the rMZ > rDZ sense. I hope I have convinced you that the heritability of divorce doesn’t mean that there are “divorce genes,” or that divorce is passed down genetically from parents to children, but seriously: how does something like that happen? I am aware that my constant minimizing of the implications of heritability can seem as though I am keeping my finger in the dike against an inevitable onslaught of scientifically based genetic determinism, the final Plominesque realization that our genes make us who we are, the apotheosis of Galton’s proclamation in 1869: “I propose to show … that a man’s natural abilities are derived by inheritance, under exactly the same limitations as are the form and physical features of the whole organic world” (Hereditary Genius, p. 1).
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