When species are kept separate by preventing the formation of hybrid zygotes, the mechanism that keeps the species separate is known as a ________ isolating mechanism.
A. differential
B. postzygotic
C. adaptive
D. prezygotic
E. hybridization
Answer: D
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A. the highest number of deaths/year. B. the fewest individuals. C. the most individuals. D. the smallest number of deaths/year. E. the most individuals and the largest number of deaths/year.
Describe the difference between cohesion and adhesion, and how they combine to allow water to move
upward in plants.
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Does this observation support the red queen hypothesis? Briefly justify your answer. What will be an ideal response?