The Questions Below Refer to the Following Evolutionary Tree, in Which

question 59

Multiple Choice

The questions below refer to the following evolutionary tree, in which the horizontal axis represents time (present time is on the far right) and the vertical axis represents morphological change.

-Which species is most closely related to species W?

• A) V is most closely related to species W.
• B) X is most closely related to species W.
• C) Y and Z are equally closely related to W.
• D) It is not possible to say from this tree.

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Definitions:

Nonverbal Expression

The communication of thoughts or emotions without using spoken words, through gestures, body language, facial expressions, and postures.

Emotion

A response of the whole organism, involving (1) physiological arousal, (2) expressive behaviors, and (3) consciously experienced thoughts and feelings.

Introverts

Individuals who prefer quiet environments and enjoy spending time alone or with a few close friends, as opposed to extroverts who seek out social interactions.

Extraverts

Individuals characterized by their outgoing, socially confident behavior and preference for external stimulation.