Two replicate small populations starting at p = 0.5 trend in OPPOSITE directions to fixation/loss. This best illustrates
- A
Migration between the populations
- Bcheck_circle
Stochastic genetic drift in finite populations
- C
Frequency-dependent selection
- D
Strong directional selection
Explanation
Genetic drift is random; in independent small populations, allele frequencies can wander in different directions and fix opposite alleles even from identical starting frequencies.