Evolutionarily, the jaws of vertebrates developed from
A. the circular mouth of lampreys.
B. the last pharyngeal arch of jawless fishes.
C. the third pharyngeal arch of jawless fishes.
D. the operculum.
E. the claspers.
C. the third pharyngeal arch of jawless fishes.
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What type of disorder is AIDS?
A. An immune rejection B. An autoimmune disease C. An immunodeficiency D. An allergic reaction
Maria has been in labor for 12 hours, and her obstetrician thinks that it is time to artificially induce birth. What hormone will the physician inject?
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At a celebratory dinner for a recent publication, a marine biologist ordered the lobster claw appetizer. What part did she order?
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