Which of the following statement about conjugation is TRUE: During F+ to F- mating, the donor becomes F-. During the Hfr to F- transfer, the recipient becomes F+. The whole bacteria genome may get transferred during Hfr mating. During the Hfr to F- transfer, some recipients become recombinants in which transferred fragment recombines with homologous region in the genome

Which of the following statement about conjugation is TRUE: During F+ to F- mating, the donor becomes F-. During the Hfr to F- transfer, the recipient becomes F+. The whole bacteria genome may get transferred during Hfr mating. During the Hfr to F- transfer, some recipients become recombinants in which transferred fragment recombines with homologous region in the genome

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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Which of the following statements about conjugation is false? After a F- cell has conjugated with an F+ cell, both cells would be F+. Both Hfr and F+ bacteria have the ability to produce a sex pilus. In F+ × F- conjugation, none of the bacterial chromosome is transferred; only the F factor is. A Hfr strain usually transfers the entire bacterial chromosome to the recipient cell. F' × F- conjugation can produce a partially diploid bacterial cell.
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A group of genetics students mix two auxotrophic strains of bacteria: one is leu+ trp+ his− met− and the other is leu− trp− his+ met+. After mixing the two strains, they plate the bacteria on minimal medium and observe a few prototrophic colonies (leu+ trp+ his+ met+). They assume that some gene transfer has taken place between the two strains. How can they determine whether the transfer of genes is due to conjugation, transduction, or transformation?
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