Which of the following is not true of telomerase function?
A. Telomerase carries a 9-base DNA template complementary to 1.5 repeat units of the telomere sequence.
B. One strand of the telomere sequence is elongated 6 bp at a time.
C. The telomerase repeats its reaction many times in one telomere-binding event.
D. The telomeres extended 3' end is made double-stranded by lagging strand synthesis.
E. The RNA template is repositioned after each extension of the 3' end.
A
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A small group of mice were released on an island. The island previously had no mice on it, but had abundant food and no predators. After several years of growth, the size of the new island population stabilizes. However, at this point a hurricane drastically reduces the population. How would you describe the situation?
A. The biotic potential of the population has been reduced. B. The new population size is a result of density-dependent regulation. C. The new population size is a result of density-independent regulation. D. The island mouse population can now act as a sink metapopulation. E. The island mouse population can now act as a source metapopulation. Clarify question: What is the key concept addressed by the question? What type of thinking is required? Gather Content: What do you already know about natural event affecting a population? What other information is related to the question? Choose Answer: Given what you now know, what information is most likely to produce the correct answer? Reflection 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?
What genetic evidence can demonstrate that some developmental events are due to chemical signaling?
What will be an ideal response?
Which of the following describes the overall three-dimensional folding of a polypeptide?
A) Primary structure B) Secondary structure C) Tertiary structure D) Quaternary structure E) None of the above
Why are transposons considered selfish genetic elements?
What will be an ideal response?