Table 2. Linkage of markers on 3R to M. citrifolia resistance.

Locationa	Markerb	Observed	Expected	Σ2	Pc
∼3:42,000,000	cutsy+	156	121	20.6	5.8 × 10−6
	cutsy−	86	121
3:46,617,828	indele	69	46	27.0	2.1 × 10−7
	indeli	20	44
∼3:50,000,000	ca+	137	118	6.2	0.01
	ca−	105	124

^aLocation in the D. melanogaster reference genome.

^bFor cutsy and claret (ca), inheritance of a second copy of the recessive marker from D. simulans. Indel^e indicates inheritance of the D. sechellia variant of the indel polymorphism and indelⁱ indicates the inheritance of a second copy of the D. simulans indel polymorphism.

^cChi-squared test.