The more closely related two organisms are,
A. the less they look alike.
B. the more similar the nucleic acid sequence.
C. the less similar the nucleic acid sequence.
D. the more they are phenotypically similar.
E. the more similar the nucleic acid sequence AND the more they are phenotypically similar.
B
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In Connell's experiments with the barnacles Chthamalus stellatus and Semibalanus balanoides, the potential distribution of each species, in the absence of the other, is known as the
A. competition zone. B. idealized niche. C. fundamental niche. D. tidal boundary. E. realized niche
The movement of organic compounds in
phloem is described as a. sink-to-source. b. pressure flow. c. cohesion-tension. d. active transport. e. transpiration pull.
In the accompanying figure, the function of the structure labeled C, particularly in small children, is to:
a. produce blood cells. b. act as a growth center. c. provide mechanical strength. d. serve as an attachment site for tendons. e. nourish the bone tissue
A researcher is using molecular phylogenetic techniques to determine the evolutionary relationships of a large set of animal species. Which type of species are most likely to have been wrongly classified based on morphology alone?
A. Parasitic species B. Terrestrial species C. Species with spiral development D. Bilateral species E. Aquatic species