In Class, Your Professor Shows You an MRI Scan of a Primate

question 18

Multiple Choice

In class, your professor shows you an MRI scan of a primate brain.The professor points out the relatively large size of the olfactory bulb beneath the frontal lobe.This suggests to you that this

• A) primate exhibits a derived trait for an enhanced sense of smell, since this trait is not commonly observed in mammal species.
• B) is a species of anthropoid because it has an increased reliance on vision.
• C) primate must be a species of Strepsirhini, as that suborder of primates relies heavily on the sense of smell for many aspects of daily life.
• D) species is nocturnal.

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Definitions:

Independent Variables

Variables in an experiment or statistical analysis that are manipulated or categorized to determine their effect on dependent variables.

Dependent Variable

The dependent variable is the variable in an experiment or model that is expected to change in response to changes in the independent variable.

Multiple Regression Model

A statistical technique that analyzes the relationship between two or more predictor variables and a single response variable.

Dependent Variable

A variable in an experiment or model that is affected by changes in other variables, often examined to observe the effect of a manipulation.