Which of the following traits is not seen in any species of lamprey?
a. backbone
b. jaws
c. oral disk with keratinized teeth
d. metamorphosis
b
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In mammals, one region has become especially important as a "relay center" for information passing from sensory structures to the cerebrum. What region is this?
A. pons B. cerebellum C. hypothalamus D. thalamus E. hippocampus
A wormlike arthropod with a flattened body and
carnivorous eating habits would be identified as a a. crustacean. b. millipede. c. spider. d. trilobite. e. centipede.
Which of the following organelles is not part of the endomembrane system?
A) ribosome B) endoplasmic reticulum C) Golgi apparatus D) lysosome E) secretory vesicle
Which gene is correctly matched with its evolutionary significance?
A. The gremlin gene - evolution of the simple eye. B. The Hox genes - evolution of body plans. C. The Pax6 - evolution of skull shape. D. The BMP4 gene - evolution of lungs.