Chromosomal Integration of F′ Factors in Recombination-Deficient Hfr Strains of Escherichia coli |
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| Authors: | Joanne K. DeVries and W. K. Maas |
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| Abstract: | ![]()
In matings between F′ donors and recombination-deficient Hfr recipients, we isolated progeny which transferred both episomal markers and Hfr markers early and with high frequency. A number of these progeny had two integrated sex factors. Investigation of these double Hfr strains showed that the F′ nearly always integrated in a homologous region of the chromosome. In any particular mating system integration was specific as to location and direction of chromosome transfer. |
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