-The Table Shows the Distribution of Traits (A-E)in Six Extant

question 42

Multiple Choice

-The table shows the distribution of traits (A-E) in six extant species (1-6) .A "0" indicates the ancestral condition,and a "1" indicates the derived condition.Which pair of species shares the greatest number of derived characters (synapomorphies) ?

• A)4 and 5
• B)2 and 4
• C)1 and 4
• D)3 and 4
• E)2 and 5

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Definitions:

Autonomic System

Portion of the peripheral nervous system that regulates internal organs.

SA Node

The sinoatrial node, a group of cells located in the right atrium of the heart, acts as a natural pacemaker by generating electrical impulses that initiate each heartbeat.

Pacemaker

Cells of the sinoatrial node of the heart; electrical device designed to mimic the normal electrical patterns of the heart.

Hepatic Portal Vein

A vein that transports blood to the liver from the spleen and gastrointestinal tract.