The phenotype distribution narrows around the same mean across many generations.
The graph shows reduction of variance with the mean unchanged. Which selection mode is operating?
- A
Sexual selection
- B
Directional selection
- Ccheck_circle
Stabilizing selection
- D
Disruptive selection
Explanation
When extremes are selected against and the mean is preserved, variance decreases, producing a narrower curve centered on the same mean - the hallmark of stabilizing selection.