If a genetic predisposition to fear darkness contributes to reproductive success, that trait will likely be passed on to subsequent generations. This best illustrates

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Natural selection is the process by which traits that contribute to reproductive success are more likely to be passed on to future generations. In this case, a genetic predisposition to fear darkness is thought to contribute to reproductive success, so this trait would be favored by natural selection and passed on to subsequent generations.

If a Genetic Predisposition to Fear Darkness Contributes to Reproductive