For biologists studying a large flatworm population in the lab, which Hardy-Weinberg condition is most difficult to meet?
A) no selection
B) no genetic drift
C) no gene flow
D) no mutation
E) random mating
Answer: D
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You are asked to give a classroom demonstration of DNA supercoiling. To do so, you take two different colored pieces of rubber tubing, twist them very tightly and excessively around each other and join the ends of the tubing appropriately. Next, you relieve the supercoiling by breaking one strand and unwinding it. In this demonstration, the breaking and unwinding to relieve the supercoiling simulates the action of
A. exonucleases. B. polymerases. C. ligases. D. topoisomerases. E. primases. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain? Gather Content · What do you already know about supercoiling? Consider Possibilities · What other information is related to the question? Which information is most useful? 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?
Which one of the following would least likely be found in the outer regions of the granal stacks?
A. photosystem I B. photosystem II C. ATP synthase D. cytochrome b6f complex E. All of these choices are equally likely to be found in the outer regions of the granal stacks.
The structural integrity of bacteria is to peptidoglycan as the structural integrity of plant spores is to _____
A) lignin B) cellulose C) secondary compounds D) sporopollenin
Gene frequencies will NOT change in a population if certain conditions are met, such as if
A. all organisms mate randomly. B. there is no migration. C. there is no mutation. D. All of these answers are true.