For a P1 Transduction Experiment, an E

question 31

Essay

For a P1 transduction experiment, an E. coli donor strain with the genotype arg+, ser+, ampR and a recipient strain with the genotype arg-, ser-, ampS were used. The following results were obtained for each marker: Of the transductants selected for arginine, 5 percent are ser+ and 30 percent are ampR. Of the transductants selected for serine, 3 percent are arg+ and 0 percent are ampR. What is the correct order and relative distance of these three genes on the E. coli chromosome?

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