The Following Questions Refer to the Paragraph and Graphs Below

question 36

Multiple Choice

The following questions refer to the paragraph and graphs below.
In a hypothetical situation, the National Park Service, which administers Grand Canyon National Park in Arizona, builds a footbridge over the Colorado River at the bottom of the canyon. The footbridge permits interspersal of two closely related antelope squirrels. Previously, one type of squirrel had been restricted to the terrain south of the river, and the other type had been restricted to terrain on the north side of the river. Immediately before and ten years after the bridge's completion, ten antelope squirrels from both sides of the river were collected, blood samples were taken, and frequencies of alleles unique to the two types of antelope squirrels were determined (see graphs below) .


-Which of the following would be a position held by an adherent of the punctuated equilibrium theory?

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Definitions:

Binocular Cues

Visual information taken in by both eyes that aids in depth perception, including stereopsis, convergence, and the vergence movement.

Monocular Cues

Visual information that allows for perception of depth and distance using one eye.

Depth Perception

The visual ability to perceive the world in three dimensions and judge the distance of an object.

Binocular Depth Cue

Visual information taken in by two eyes that enable us to perceive depth and distance.