What term describes random fluctuations in allele frequencies from one generation to the next due to chance?

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Multiple Choice

What term describes random fluctuations in allele frequencies from one generation to the next due to chance?

Random fluctuations in allele frequencies from one generation to the next due to chance are genetic drift. This happens especially in small populations because a random sample of gametes may pass on more of one allele by luck alone, causing the overall frequency to shift independent of any advantage or disadvantage. Over time, drift can lead to alleles becoming fixed or lost, and it is especially strong after events that shrink population size (bottlenecks) or when a new population is started by only a few individuals (founder effect). This differs from mutation (which introduces new alleles), natural selection (which favors alleles that improve survival or reproduction), and gene flow (which alters frequencies via migration between populations).

What term describes random fluctuations in allele frequencies from one generation to the next due to chance?

Study for the Biology 30 Genetics Test. Engage with a variety of question types, including multiple choice, flashcards, and detailed explanations. Ensure you're prepared for your exam day!

What term describes random fluctuations in allele frequencies from one generation to the next due to chance?

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