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1) In gel electrophoresis, which ofthe following DNA fragments would travel the farthest distance fromthe sample well?
A) ATB) ATCCCGATTGCACGTTC) ATCCCGD) ATCCCGATE) ATCC
2) Which type of cloning vecotroccurs in nature?
A) Plasmids and cosmidsB) Plasmids and bacteriophagesC) plasmids and BACsD) Bacteriophages and cosmidsE) YACS and BACs
How might 32 P and 35 S be used to demonstrate that the transforming principle is DNA? Briefly outline an experiment that would show that DNA rather than protein is the transforming principle.
How does the brain recognize the difference between high C and low C? Between a loud and a soft sound.
How does the complexity of an ecosystem influence the changes (rate, frequency, duration) within a habitat. How might scale (temporal/ spatial) influence ecosystem complexity?
What is unusual about the way that H+ ions are transported across the inner mitochondrial membrane as compared to the movement of other ions like Na+ andCl- ions?
Define stable equilibrium in population genetics (1). Describe two ways by which natural selection can lead to a stable equilibrium over several generations (2). Give an example of one of them (1). Describe how the equilibrium is maintained (1).
a national survey is conducted to assess the association between hypertension and stroke in persons over 55 years of
Allolactose is the inducer in the wild-type lac operon, in nature. However, in the experiment IPTG was the inducer. Why is it important that IPTG is not metabolized?
Few decades ago, most population geneticists believed that populations are genetically uniform, except for rare deleterious mutations.
Genes A , B , and C are linked on a chromosome and found in the order A-B-C. Genes A and B recombine with a frequency of 10 percent.
Explain why is agar typically used as a solidifying agent in microbiological media instead of gelatin? What could happen if gelatin was used?
Can viruses evolve? Why or why not? a. No, only their hosts can evolve. b. Yes, their genetic make-up responds to natural selection. c. No, they are not alive. d. Yes, they are able to alter their genetic code directly in response to selection pre..
Explain plant adaptations that allowed plants to colonize drier habitats and to increase their success in colonizing a variety of habitats. Be sure to include differences in reproduction and in transport systems among the different plant groups.
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