what is Reverse transcriptase?
What will be an ideal response?
Reverse transcriptase is an enzyme that converts RNA into DNA.
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Earth's early atmosphere contained (select all that apply):
A. methane. B. water. C. nitrogen. D. hydrogen. E. organic molecules.
A plant has a mutation in the gene that codes for systemin. What is the likely consequence of this mutation?
A. The plant will have a stronger than normal wound response. B. The mutated form of systemin would be recognized as a pathogen and a hypersensitive response will be initiated. C. The levels of jasmonic acid will build inside the cell creating a toxic environment. D. Systemin receptors will not be activated and proteinase inhibitor will not be transcribed. E. R genes will fail to match up with avr genes. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? does the question contain and what do they mean? Gather Content · What do you already know about about the function of systemin? How does it relate to the question? 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?
Heterochrony
1.is a change in the timing of development. 2.causes the morphology of closely related species to be the same. 3.is a different rate of growth in various body parts. 4.is a cause of mass extinction. 5.None of the options is correct.
The method of independent contrasts:
a. allows evolutionary biologists to use comparative methods for studying how natural history operates. b. compares the best possible tree overall with the best possible constrained tree. c. relies on running odds ratio tests. d. All of the above. e. A and C.