The Emergence of Each New Branch on the Evolutionary Tree

question 52

Multiple Choice

The emergence of each new branch on the evolutionary tree represents

• A)the addition of a new Linnaean taxon within that lineage.
• B)the completion of a generation for that particular organism.
• C)the introduction of the most important features of a group.
• D)a common ancestor and the introduction of a new shared derived feature.

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Definitions:

Panic

A sudden sensation of fear, which is so strong as to dominate or prevent reason and logical thinking, replacing it with overwhelming feelings of anxiety and frantic agitation consistent with fight-or-flight response.

Ritualistic Behavior

Repetitive actions performed in a particular order, often associated with religious, cultural, or psychological practices to achieve a sense of security or control.

Obsessive-Compulsive

A disorder characterized by uncontrollable, recurring thoughts (obsessions) and behaviors (compulsions) that an individual feels the urge to repeat.

Somatoform

Relating to a group of psychological disorders in which a patient experiences physical symptoms that are inconsistent with or cannot be fully explained by any underlying medical condition.