Question

Researchers in the late 1950s isolated multiple antibiotic-resistant strains of the bacterium Shigella, which causes dysentery. Such resistance was caused by nonchromosomal R factors that originated in E. coli. Which of the following forms of extrachromosomal heredity"maternal effect, organelle heredity, infectious heredity"would you consider most closely related to the transfer bacterial antibiotic-resistant strains?

Answer

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