You can assume that all resistance alleles map to the

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infections, 60 cases of tetracycline resistant infections, and 20 cases of streptomycin-resistant infections. You can assume that all resistance alleles map to the same gene, that the bacteria only infects humans, that infected humans carry the same number of bacteria, that the bacteria were absent from the hospital prior to the accident, and that one generation transpired before the patients were sampled. 66) The frequency of the tetracycline allele in the gene pool of bacteria released into the hospital immediately after the accident was: A) 0.1 B) 0.3 C) 0.5 D) 0.6 E) 0.9 67) Assuming that the total number of bacteria is the same at the time of the spill and the sampling of patients, then the Darwinian fitness of the streptomycin-resistant phenotype is:
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68) The relative fitness of the penicillin-resistant phenotype is: 69) The best ‘gene transport machine’ is the: 70) If you were admitted to the hospital a little more than a month after the accident, which single antibiotic would provide the least protection from this infective agent? A) Tetracycline B) Penicillin C) Streptomycin D) Penicillin & Tetracycline E) Streptomycin & Tetracycline _____________________________________________________________________________ Use the following information for the next 3 questions (until you see a solid line): A new drug is developed to fight HIV/AIDS that binds to the CCR5 protein and thereby prevents other molecules from binding to it. The drug is given to a group of high-risk uninfected individuals. There was also a matched control group (uninfected) that did not receive the drug. 71) After 1 year, those individuals in the control group that became infected with the HIV virus are expected to: 72) In individuals receiving the new drug (for the rest of their life), the addition of the drug AZT to the treatment:
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