While conducting research with a small population in South America you note that an overwhelming majority of individuals exhibit signs of a specific genetic abnormality.This is most likely the result of:

Question

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The overwhelming majority of individuals exhibiting signs of a specific genetic abnormality in a small population is most likely due to the founder effect. The founder effect occurs when a small group of individuals establish a new population, and the resulting gene pool may be different from the larger original population from which it was derived. This can lead to a high prevalence of certain genetic traits within the new population.

While Conducting Research with a Small Population in South America