Two populations differing only in size were tracked across generations for the frequency of allele A (p).
Which conclusion best fits the graph?
- Acheck_circle
Genetic drift causes greater fluctuations in p in smaller populations
- B
Selection pressure is stronger in the small population
- C
Mutation rate scales inversely with population size
- D
Genetic drift acts more strongly in larger populations
Explanation
Genetic drift's magnitude is inversely related to effective population size. Small populations show wider stochastic swings in allele frequency, exactly as the dashed line illustrates.