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Chi is a genetic element that stimulates phage lambda recombination by the Escherichia coli recBC pathway during lytic infection Stahl, F. W. (1979) Annu. Rev. Genet. 13, 7--24. Herein we show that chi in lambda prophage influences exchange distribution in P1 phage-mediated transduction and in conjugation. This demonstration encourages the view that chi may influence genetic exchange in E. coli in the total absence of lambda.
Dower et al. (Sun,) studied this question.