When Male Moose Engage in Their Annual Battles, Butting Heads

question 39

Multiple Choice

When male moose engage in their annual battles, butting heads with their oversized antlers, they are exhibiting ____ selection.

• A) stabilizing
• B) disruptive
• C) directional
• D) intrasexual
• E) intersexual

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Definitions:

Independent Variable

A variable in an experiment that is manipulated or changed by the researcher to study its effects on the dependent variable.

Extraneous Variable

A variable that is not of interest in a study but may affect the outcome of the experiment if not controlled.

Control Group

In research, a control group is a group of subjects not exposed to the experimental treatment, used as a benchmark to measure the effect of the treatment.

Independent Variable

A variable that is manipulated in an experiment to see its effect on a dependent variable.