The Jaws of Vertebrates Are Thought to Have Been Derived

question 80

Multiple Choice

The jaws of vertebrates are thought to have been derived by the modification of:

• A)the toothlike structures found in lampreys.
• B)folds of skin at the anterior region of jawless ancestors.
• C)the cartilage that supports the gills in jawless fishes.
• D)the cartilage that supports the fins in ancestral cartilaginous fishes (sharks).

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Definitions:

Positive Psychology

A branch of psychology focused on the study and promotion of positive aspects of human life, such as happiness and well-being.

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An emphasis or concentration on understanding events, circumstances, and contexts from the past.

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The study of diseases and the structural and functional changes they cause.

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