Question

1. in a population of birds, the average beak size is favored. what type of selection is this? disruptive directional stabilizing kin

Explanation:

To determine the type of selection, we analyze each option:

• Disruptive selection favors extreme phenotypes, not the average.
• Directional selection favors one extreme phenotype, shifting the population mean.
• Stabilizing selection favors the average (intermediate) phenotype, reducing variation. Here, average beak size is favored, so this matches stabilizing selection.
• Kin selection is about altruism towards relatives, not related to phenotype selection for beak size.

Answer:

C. stabilizing