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You discover that a gene for resistance to a new antibiotic is rapidly spreading through a pathogenic population of Pseudomonas aeruginosa. You find that in culture conditions where the bacteria can't grow because they are missing an essential nutrient, the gene still spreads through the population, indicating that it is spreading horizonally. Unfortunately, your DNA sequencing facilities have gone down for the week, and your Dean expressly forbids you from spending money on outside sequencing resources. Therefore you have to solve this problem "Old School." But you have other modern molecular biology tools, and the ability to make a marked recipient strain for experiments. Describe the experiments you would use to determine if the gene was on a plasmid or a lysogenic bacteriophage.
Which of the following is the best definition of autoimmune disease?
a certain type of crab tends to be larger in a local bay than in the open water outside the bay. What hypotheses might account for this difference? HOW would you go about testing these hypotheses?
Effect of Alcoholism on the Digestive System
mendel and the re-discoverers of genetics correns de vries and tschermak identified discrete traits whose patterns of
Invasive species are exotic to new areas and growth rapidly. Give two reasons why an invasive species is able to take advantage of a new area.
What pattern is observed regarding sulfur dioxide concentrations?
Two organisms, one of homozygous dominant genotype and the other homozygous recessive, are mated to produce an F1 generation that is then self-fertilized
Which of the subsequent statements is true about phylogeny. The ancestral group frequently has all the synapomorphies of the descendant species.W hat phenotypes would be seen in the f2 and in what proportion.
A researcher designs a double-blind experiment to see if Echinacea tablets are effective at preventing the common cold.
A mouse breeder has a strain of black mice that normally breed true and produce only black mice. Occasionally, however, a brown mouse or two has appeared in litters of some of the mice.
Given the following values r=0.5, a=0.06, h=1, b=0.05, k=99, and Nt=50 and Pt=50 what value of d would result in a graph with damped oscillations using the Rosenweig-Mac Arthur predator prey model.
A 26.0mL sample of phosphoric acid (H3PO4) is neutralized by 32.7mL of 2.46M NaOH. A) Balance the equation: NaOH + H3PO4 ? Na3PO4 + H2O B) What is the molarity of the H3PO4 solution?
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