The Figure Above Shows the Skeletal Structure of the Forelimbs

question 41

Multiple Choice

The figure above shows the skeletal structure of the forelimbs of several vertebrates. Because these skeletal elements are similar in form and are believed to have evolved from a common ancestral structure, they are said to be

• A) analogous.
• B) heterologous.
• C) vestigial.
• D) homologous.
• E) nonfunctional.

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Definitions:

Variables

Elements, features, or factors that can be changed and measured in scientific research to determine their effects on the outcomes of the research.

Reliable Test

A test that consistently produces the same results over time when given in the same conditions.

Validity

The extent to which a test or instrument measures what it is supposed to measure.

Internal Consistency

The degree to which items in a psychological test measure the same construct, indicating the reliability of the test.