TABLE 5.

Indirect tests for monogenic and polygenic inheritance of Cry1C resistance in Cry1C-Sel strain using second instars by χ² analysis (df = 1)

Conc (mg of AI/liter)	Genetic modela
	One locus		Two loci		Five loci
	χ2	P	χ2	P	χ2	P
3.16	0.58	0.45	10.8	0.001b	152	<0.001b
10	0.76	0.38	10.2	0.001b	188	<0.001b
31.6	0.03	0.85	7.24	0.007b	153	<0.001b
100	0.94	0.33	16.3	<0.001b	153	<0.001b
200	5.17	0.02b	30.6	<0.001b	105	<0.001b
316	6.69	0.01b	30.1	<0.001b	57.2	<0.001b
1000	14.8	<0.001b	30.0	<0.001b	36.5	<0.001b
3160	12.9	<0.001b	12.2	<0.001b	15.8	<0.001b
10000	6.50	0.01b	4.69	0.03b	8.30	0.04b

^aModels assume equal and additive effects of loci. 

^bObserved mortality significantly deviated form the model prediction (P < 0.05).