Fatter sociable weaver birds spend more time foraging where they are vulnerable to predation, are more attractive to predators, and are less likely to escape an attack. Conversely, thin birds risk starvation. Therefore, sociable weaver of an intermediate weight has a selective advantage. This is an example of ____ selection.
A) frequent
B) directional
C) disruptive
D) stabilizing
E) mutational

Question

Quizplus · Accepted Answer

Stabilizing selection favors the average individuals in a population, in this case, birds of intermediate weight, because they have a selective advantage over both the fatter and thinner birds, reducing the extremes in the population.

Fatter Sociable Weaver Birds Spend More Time Foraging Where They