A volcano wipes out the majority of the members of a population of mice. By chance,...

Question:

A volcano wipes out the majority of the members of a population of mice. By chance, the surviving members have, on average, darker coloration than the original population. Coloration is a heritable trait. If the next generation has darker coloration than the original population, which of the following has occurred in this population? All of these have occurred Natural selection Gene flow None of these have occurred Evolution

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