This hypothesis has also achieved some empirical support. While it is theoretically possible that natural selection may, under certain genetic circumstances, select for individuals that instinctively avoid mating with (close) relatives, incest will still exist in the gene pool because even genetically weakened, inbred individuals are better watchposts against predators than none at all, and weak individuals are useful for the stronger individuals in the group as looking out for predators without being able to seriously compete with the stronger individuals. Additionally, protecting the health of closer relatives and their inbred offspring is more evolutionarily advantegous than punishing said relative, especially in a context where predation and starvation are significant factors, as opposed to a rich welfare state. This section needs additional citations for verification.
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