Individual females within a population of horses are tracked over time to examine their reproductive output.The researchers find that females with the smallest and largest body sizes have fewer offspring than females of average body size.Most likely, _______ selection for size is operating.
A) stabilizing
B) destabilizing
C) sexual
D) directional
E) diversifying

Question

Quizplus · Accepted Answer

Stabilizing selection is occurring because individuals with average body size have higher reproductive success. This narrows the range of body size within the population, maintaining the "average" body size phenotype.

Individual Females Within a Population of Horses Are Tracked Over