Table 2.

Transduction by r_K⁻m_K⁻ donors

Donor*	Recipient	Percent of transductants with donor phenotypes
		DnaC+ rK−mK−	DnaC+ TetS
NM854	NM815 (rK+mK+)	52	96
NM854	NM814 (rK−mK+)	50	96
NM840	NM815 (rK+mK+)	43	96
NM840	NM814 (rK−mK+)	56	94
NM679	NM815 (rK+mK+)	98 (94)†	96 (90)†
NM679	NM814 (rK−mK+)	100 (95)†	97 (92)†

The order of genes on the chromosome is hsdS hsdM hsdR dnaC Tn10. Cotransduction frequencies are based on a minimum of 50 colonies. 

^*See Table 1 for identification of hsd deletion. The hsdSM deletion in NM854 is tagged by a gene conferring resistance to kanamycin. The other deletions were recognized by their restriction and modification phenotype. 

^†Donor strain for data within brackets was without λhsdM⁺S⁺ prophage and therefore m_K⁻.