Question

disruptive selection
the change you observed in the beak size of the island’s finches is called disruptive selection.
which of following best describes disruptive selection? check all that apply.
the average version of the trait is favored.
the average version of the trait is not favored.
both extremes of the trait are favored (very large and very small beaks).
one extreme of the trait is favored (very large or very small beaks).
all beak sizes are affected equally by the environment.

Explanation:

Disruptive selection favors both extreme phenotypes of a trait over the average phenotype. In the case of finch beak - size, it means both very large and very small beaks are favored, not the average beak - size.

Answer:

• The average version of the trait is not favored.
• Both extremes of the trait are favored (very large AND very small beaks).