Table 3 2×2×2×2 contingency table for Aa offspring from 13 AA×aa and Aa×aa progenies raised from wild-caught pairs at Dar es Salaam (n=9) and Nairobi (n=4) (Smith et al, 1998), classified by four criteria, penetrance of the a allele, B locus genotype (B−/bb), C locus genotype (C−/cc) and sex

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

  

C−

Cc

Total

  

 

a penetrant

B

18

3

23

13

57

 

bb

41

15

3

24

83

a impenetrant

B

11

20

11

20

62

 

bb

19

25

4

44

92

Total

 

89

63

41

101

294