If Trall, the friendly Neanderthal, is born with a genetic mutation, what will happen to Trall in an evolutionary sense?

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If the genetic mutation is beneficial, Trall's fitness may be enhanced, and he may have better chances of passing on the mutation to future generations. However, if the mutation is deleterious, Trall's fitness may be reduced, and he may have fewer opportunities to pass on the mutation. In either case, the mutation may affect the evolution of Trall's population in the long term.

If Trall, the Friendly Neanderthal, Is Born with a Genetic