Question

1. disruptive selection favors which phenotypic traits?

intermediate
extreme
directional
sexual

Explanation:

Disruptive selection (also called diversifying selection) is a type of natural selection that favors extreme phenotypic traits at both ends of the spectrum, while selecting against intermediate traits. For example, in a population, if there are individuals with two extreme phenotypes (e.g., very small and very large beak sizes in birds) and an intermediate one, disruptive selection would favor the extreme ones, leading to a split in the population's phenotype distribution. The other options: "intermediate" is what disruptive selection selects against; "directional" is a different type of selection (favors one extreme over others); "sexual" refers to sexual selection, not disruptive selection.

Answer:

B. extreme