Table 4 Analysis of χ2 for the data in Table 3

From: Incomplete sexual isolation in sympatry between subspecies of the butterfly Danaus chrysippus (L.) and the creation of a hybrid zone

Effect tested

χ2

d.f.

Penetrance of a allele in Aa genotype×B genotype (B−/bb)

0.006

1

Penetrance of a allele in Aa genotype×C genotype (C−/cc)

1.165

1

Penetrance of a allele in Aa genotype×sex

29.488***

1

B genotype (B−/bb)×C genotype (C−/cc)

5.128*

1

B genotype (B−/bb)×sex

6.168*

1

C genotype (C−/cc)×sex

26.218***

1

Second-order interaction at A locus

0.222

1

Second-order interaction at B locus

10.667**

1

Second-order interaction at C locus

0.000

1

Second-order interaction for sex

3.932*

1

Third-order interaction

10.829**

1

Total

93.823***

11

  1. *P<0.05;
  2. **P<0.01;
  3. ***P<0.001.
  4. Partition of χ2 follows the method of Lancaster (1951) and Lewis (1962).
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