BIOL 1020 Lecture Notes - Hypothalamus, Flatfish, Starfish
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23 Nov 2011
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Most animals with backbones, vertebrates, have a similar body plan: skull, ribs, two pairs of limbs, tail. What does this suggest about vertebrates?
A. | Vertebrates are the best designed organisms. | |
B. | Vertebrates all adapted to similar environmental conditions. | |
C. | Vertebrates all have similar lifestyles. | |
D. | Vertebrates have been around longer than most other organisms. | |
E. | Vertebrates are all related to a common ancestor. |