_______ happens when there is a decrease in the frequency of a particular trait due to random mating.

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Genetic drift occurs when a population experiences random fluctuations in gene frequencies due to chance events such as random mating, reduce the frequency of a particular trait. The founder effect and bottleneck effect refer to specific types of genetic drift. Natural selection and extirpation involve more specific mechanisms of evolutionary change.

_______ Happens When There Is a Decrease in the Frequency