Refer to the Phylogenetic Tree Below Showing the Phylogenetic Relationships

question 94

Multiple Choice

Refer to the phylogenetic tree below showing the phylogenetic relationships among eight species.Red dots indicate the appearance of derived traits. The positions of which two taxa could be reversed without changing the meaning of the tree?

• A) Crocodile and pigeon
• B) Crocodile and lizard
• C) Mouse and pigeon
• D) Lizard and salamander
• E) Lamprey and chimpanzee

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Definitions:

Venules

Small vessels that transport blood from the capillaries to the veins, playing a key role in the circulatory system.

Atrioventricular Node

A part of the heart's electrical system situated between the atria and ventricles that regulates the timing of heart muscle contractions.

Action Potential

Brief reversal of the charge difference across a neuron membrane.