In a gene mapping experiment, DNA from a prototrophic E. coli strain is transformed into an E. coli strain mutant (auxotrophic) for the genes gal, pro, and lac. Some resulting transformants were found to be auxotrophic only for pro, and some only for gal, but no lac- only auxotrophs were observed. Based upon these results, which gene is in the middle? a. gal b. lac c. pro d. cannot be determined c. the genes are not on the same chromosome
In a gene mapping experiment, DNA from a prototrophic E. coli strain is transformed into an E. coli strain mutant (auxotrophic) for the genes gal, pro, and lac. Some resulting transformants were found to be auxotrophic only for pro, and some only for gal, but no lac- only auxotrophs were observed. Based upon these results, which gene is in the middle? a. gal b. lac c. pro d. cannot be determined c. the genes are not on the same chromosome
Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Chapter15: From Dna To Protein
Section15.1: The Connection Between Dna, Rna, And Protein
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In a gene mapping experiment, DNA from a prototrophic E. coli strain is transformed into an E. coli strain mutant (auxotrophic) for the genes gal, pro, and lac. Some resulting transformants were found to be auxotrophic only for pro, and some only for gal, but no lac- only auxotrophs were observed. Based upon these results, which gene is in the middle?
a. gal
b. lac
c. pro
d. cannot be determined
c. the genes are not on the same chromosome
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