Two Populations of Mice Exist on Either Side of a River.After

question 186

Multiple Choice

Two populations of mice exist on either side of a river.After a bridge is constructed across the river, the two populations come to resemble each other more.What is the most likely explanation for this?

• A) Stabilizing selection
• B) Directional selection
• C) Gene flow
• D) Genetic drift
• E) Nonrandom mating

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Definitions:

Evolutionary

Pertaining to evolution, the process by which different kinds of living organisms are thought to have developed and diversified from earlier forms during the history of the earth.

Yerkes-Dodson

A law suggesting that performance increases with physiological or mental arousal to a certain point, but beyond that, performance decreases.

Affiliation

The sense of connection or association with a group or organization, often resulting in a feeling of belongingness.

Achievement

The act of accomplishing a goal or attaining a high level of performance through effort or skill.