摘要：

The temperate bacteriophage P1 acts as transducing agent for a large variety of genetic characteristics of strains of Escherichia coli and of Shigella dysenteriae.In E. coli strain K12, markers that behave as closely linked in sexual crosses can be transduced jointly. The frequency of joint transduction decreases sharply with decreasing linkage. A prophage character of phage λ has also been transduced by phage P1. Transduction of characters between bacteria of the coli and dysentery groups indicates genetic homologies between these groups.

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