Question

the graph shows the distribution of height in a population of animals. if disruptive selection is acting on this trait in that population, which phenotype(s) will have higher fitness?
○ both a and c
○ a
○ b
○ c
○ either a or c

Explanation:

Disruptive selection (also known as diversifying selection) favors extreme phenotypes over intermediate phenotypes. In the context of this height - distribution graph, if disruptive selection is acting, the phenotypes at the extremes (A and C) will have higher fitness. This is because disruptive selection acts to increase the variance in a trait by selecting against the average or intermediate form (B in this case).

Answer:

Both A and C