. 2007 Sep 28;189(23):8685–8692. doi: 10.1128/JB.01150-07

TABLE 2.

Analysis of linkage disequilibrium by calculation of I_A^S for the SIG and for the S. pseudintermedius and S. delphini phylotypes

Group selection	I_A^S	P value^a
Group selection	I_A^S	Parametric	Monte Carlo (100 iterations)
SIG	0.151	0.0000	0.001
S. pseudintermedius	0.0877	0.0000	0.001
S. delphini	0.3699	0.0000	0.001
S. intermedius^b	ND	ND	ND

The value of the I_A^S would be expected to be zero for linkage equilibrium when recombination events occur frequently. If the I_A^S (P < 0.05) value differs significantly from zero, recombination should be rare.

The small number of isolates of the S. intermedius phylotype precluded carrying out this analysis. ND, not done.