Which single event is probably common to all occurrences of speciation?
What will be an ideal response?
The generation of reproductive isolating mechanisms—geographic, behavioral, physiological, and mechanical—provides common factors in the speciation process.
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Imagine that a very unusual animal species had the ability to make its own aromatic amino acids using a 5-enolpyruvylshikimate-3-phosphate (EPSP) synthase enzyme similar to that of plants. What would happen if this animal foraged in a field of glyphosate-resistant plants?
A. No effect. B. They would become sick from the glyphosate that was sprayed on the plants. C. They would also become glyphosate-resistant. D. They would no longer need to make their own aromatic amino acids. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about herbicide resistance transgenes? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
True or false: Niches are dynamic, and are affected by interactions among species
A. true B. false
The idiosyncratic hypothesis suggests that:
A. Ecosystem function changes unpredictably as the number of species increases or decreases. B. Ecosystem function decreases as the number of species decreases. C. Ecosystem function changes in a predictable, but non-linear manner with a change in species number. D. Ecosystem function is independent of the number of species. E. Ecosystem function decreases as the number of species increases.
The reason Darwin sailed aboard the H.M.S. Beagle was because he ____
a. wanted to develop his theory of evolution b. was invited to be the ship's naturalist c. was invited to be the ship's geologist d. was invited to be the captain's dining companion e. was invited to be the captain's personal physician