A bacterium of genotype a+ b+ c+ d+ is the donor in a cotransformation mapping. The recipient is a-b-c-d-. Data from the transformed cells is shown below. What is the order of the genes? a+ and b+ 5 a+ and c+ 2 a+ and d+ 0 b+ and c+ 0 b+ and d+ 0 c+ and d+ 5 cbad cadb bcda acbd bacd

A bacterium of genotype a+ b+ c+ d+ is the donor in a cotransformation mapping. The recipient is a-b-c-d-. Data from the transformed cells is shown below. What is the order of the genes? a+ and b+ 5 a+ and c+ 2 a+ and d+ 0 b+ and c+ 0 b+ and d+ 0 c+ and d+ 5 cbad cadb bcda acbd bacd

Name: A bacterium of genotype a+ b+ c+ d+ is the donor in a cotransformation
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Description: A bacterium of genotype a+ b+ c+ d+ is the donor in a cotransformation mapping. The recipient is a-b-c-d-. Data from the transformed cells is shown below. What is the order of the genes?a+ and b+ 5 a+ and c+ 2a+ and d+ 0b+ and c+ 0b+ and d+ 0c+

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

Chapter17: Bacterial And Viral Genetics

Section: Chapter Questions

Problem 1ITD

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Austin Taylor and Edward Adelberg isolated some new strains of Hfr cells that they then used to map several genes in Escherichia coli by using interrupted conjugation. In one experiment, the researchers mixed cells of Hfr strain AB‑312, which were xyl+ mtl+ mal+ met+ and sensitive to phage T6, with F− strain AB‑531, which was xyl− mtl− mal− met− and resistant to phage T6. The cells were allowed to undergo conjugation. At regular intervals, the researchers removed a sample of cells and interrupted conjugation by killing the Hfr cells with phage T6. The F− cells, which were resistant to phage T6, survived and were then tested for the presence of genes transferred from the Hfr strain. The results of this experiment are shown in the graph. On the basis of these data, give the order of the xyl, mtl, mal, and met genes on the bacterial chromosome and the minimum distances between them in minutes. The origin of transfer is represented by the red triangle. The distances between genes are not…
Austin Taylor and Edward Adelberg isolated some new strains of Hfr cells that they then used to map several genes in E. coli by using interrupted conjugation . In one experiment, they mixed cells of Hfr strain AB-312, which were xyl+ mtl+ mal+ met+ and sensitive to phage T6, with F− strain AB-531, which was xyl− mtl− mal− met− and resistant to phage T6. The cells were allowed to undergo conjugation. At regular intervals, the researchers removed a sample of cells and interrupted conjugation by killing the Hfr cells with phage T6. The F− cells, which were resistant to phage T6, survivedand were then tested for the presence of genes transferred from the Hfr strain. The results of this experiment are shown in the accompanying graph. On the basis of these data, give the order of the xyl, mtl, mal, and met genes on the bacterial chromosome and indicate the minimum distances between them.
A bacterium of genotype a+b+c+d+ is the donor in a cotransformation mapping. The recipient is a–b–c–d–. Data from the transformed cells are shown below. What is the order of the genes? a+ and b+ 2 a+ and c+ 0 a+ and d+ 5 b+ and c+ 5 b+ and d+ 0 c+ and d+ 0
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Shown below are the complementation test results involving 4 independently isolated lethal mutants in a bacteriophage. Complementation was assayed by simultaneouly infecting bacteria with two phage strains, each with a different mutation, neither of which could alone lyse the cells. In the table below, a "+" indicates the strains complemented each other and therefore lysed open the bacteria. A "0" indicates no complementation and therefore no cell lysis occurred. Test pair Results 1___2___3___4 1,2 + 1 0 + + 0 1,3 + 2 0 + + 1,4 0 3 0 + 2,3 + 4 0 2,4 + 3,4 + How many genes are there? a. 3 b.1 c. 2 d. 4