What is the difference between genetic drift and natural selection?

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In genetic drift, the genetic variation in the population increases. In natural selection, the genetic variation in the population decreases.

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In genetic drift, the changes in allele frequency are due to chance. In natural selection, the changes are due to differences in fitness.

In genetic drift, changes in the population do occur. In natural selection, no evolution occurs.

In genetic drift, no evolution occurs. In natural selection, changes in the population do occur.

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