Table 1.

Summary of linkage analysis for virulence on chromosome VII

Clone	Serum test	Vir	Mortality %	SAG4 (VII)	M95 (VII)	cS10-A6 (VII)	M102 (VII)
A9SF	+	Non	6.7	III	III	III	III
E5SF	+	Non	26.7	III	III	III	III
G2AF	+	Non	13.3	III	III	III	III
C295-9	+	Non	6.7	III	III	III	III
E4SF	+	Int	36.4	III	III	III	III
G7SF	+	Int	43.5	III	III	III	III
C285-1	+	Int	40	III	III	III	III
C285-4	+	Int	66.7	III	III	III	III
C285-11	+	Int	41.7	III	III	I	I
A9AF	+	Int	71.4	III	III	III	III
A6AF	+	Int	92.6	III	III	I	I
G2SF	+	Int	92.9	I	I	I	I
C11AF	−	Vir	100	III	III	III	III
D9AF	−	Vir	100	III	III	III	III
E7SF	−	Vir	100	I	I	I	I
B4SF	−	Vir	100	I	I	I	I
H7AF	−	Vir	100	I	I	I	I
E8SF	−	Vir	100	III	I	I	I
B10AF	−	Vir	100	I	I	I	I
C285-10	−	Vir	100	I	I	I	III
C295-31	−	Vir	100	I	I	I	I
C295-3	−	Vir	100	I	I	III	III
C7SF	−	Vir	100	I	I	I	I
C295-5	−	Vir	100	I	I	I	III
C295-27	−	Vir	100	I	I	I	I
C295-29	−	Vir	100	I	I	I	I
B5AF	−	Vir	100	III	III	I	I
E6AF	−	Vir	100	III	I	I	III
C285-13	−	Vir	100	I	I	I	I
C295-2	−	Vir	100	I	I	I	I
LOD	3.9		Linkage	2 × 10−4	1 × 10−5	2 × 10−5	2 × 10−3

I, Genotype of type I parental strain; III, Genotype of type III parental strain.

^*+, seropositive survivors; −, no serum positive survivors.

^† Virulence phenotypes; Non, nonvirulent; Int, intermediate and Vir, virulent.

^‡ Genetic locus. Letters in parentheses denote chromosomes.

^§ A9SF, E4SF, and G7SF are apparently genetically identical clones.

^¶ A9AF and C11AF are apparently genetically identical clones.

^∥ A6AF and B5AF are apparently genetically identical clones.

^**Comparison of serum positivity to M95.

^†† The P value of for single-locus association.