Beak-size variation in a population shifts from a single peak (dashed) to two peaks (solid) after selection.
What mode of selection produces the bimodal post-selection (solid) curve from a unimodal pre-selection (dashed) curve?
- A
Directional selection
- Bcheck_circle
Disruptive selection
- C
Genetic drift
- D
Stabilizing selection
Explanation
Disruptive selection favors both extremes and disfavors intermediates, splitting a single peak into two and potentially driving sympatric speciation.