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In the figure, the letters A-G represent individual species that all descended from a common ancestor. Which of the following conclusions regarding the phylogeny of these organisms can be made from this tree?
Physiologic Function
The normal or healthy functioning of a living organism or any of its parts.
Positron Emission Tomography
An imaging technique that uses radioactive substances to visualize and measure changes in metabolic processes in the body.
Residual Barium
Barium remaining in the intestinal tract following evacuation at the completion of X-ray studies.
Intestinal Tract
A major part of the digestive system, consisting of a series of hollow organs joined in a long, twisting tube from the stomach to the anus.
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