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Random genetic drift in a population probably results from

1. large population size
2. highly genetically variable individuals
3. interbreeding within this population
4. constant low mutation rate

Correct answer: interbreeding within this population

Solution

Random genetic drift is the chance fluctuation of allele frequencies, and it is most noticeable when individuals mate within the same population. Interbreeding keeps the gene pool local, so random sampling from parents to offspring can shift allele frequencies over generations.

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