A) That These Organisms Are Phenotypically More Similar to Each

question 51

Multiple Choice

A) that these organisms are phenotypically more similar to each other than to any others shown on the trees in Figure 26.2.
B) that their morphological similarities are probably homoplasies.
C) that they had a common ancestor.
D) that all three of the responses are correct.
E) that two of the responses are correct.
Answer: C
-One morphological feature of modern cetaceans is a vestigial pelvic girdle. If it is determined that cetacean lineage diverged from the artiodactyls' lineage after the divergence of pigs and other artiodactyla, then what should be true of the vestigial pelvic girdle of cetaceans?

• A) It should be considered a shared ancestral character of the cetartiodactyls.
• B) It should be considered a shared derived character of the cetartiodactyls.
• C) It should be considered a shared ancestral character of the cetaceans.
• D) It should be considered a shared derived character of the cetaceans.

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Definitions:

In-Group Goals

Objectives or targets shared by members of a group that identify with each other and perceive themselves as part of the same group.

Big Five

A model in psychology that outlines five major dimensions of human personality traits: Openness, Conscientiousness, Extraversion, Agreeableness, and Neuroticism.

Emotional Stability

A personality trait characterized by the consistency of one's emotional state and a low propensity to experience negative emotions under stress.

Openness

A quality of being willing to consider new ideas, experiences, and information without prejudice.