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Table 5 Chi-squared test results showed linkage between pairs of loci across six populations of Cx. p. quinquefasciatus (Fisher’s method)

From: Sodium channel point mutations associated with pyrethroid resistance in Chinese strains of Culex pipiens quinquefasciatus (Diptera: Culicidae)

Locus pair

χ2

df

P- value

V250M & R436K

0.0000

2

1.0000

V250M & M943V

10.307

12

0.5890

R436K & M943V

0.0000

2

1.0000

V250M & I973T

13.680

12

0.3216

R436K & I973T

0.0000

2

1.0000

M943V & I973T

Infinity

12

<0.01

V250M & L1035F/S

13.758

12

0.3164

R436K & L1035F/S

1.1216

2

0.5707

M943V & L1035F/S

20.486

12

0.0584

I973T & L1035F/S

20.864

12

0.0524

V250M & E1901D

12.551

12

0.4025

R436K & E1901D

0.0000

2

1.0000

M943V & E1901D

8.3050

12

0.7609

I973T & E1901D

6.0710

12

6.0710

L1035F/S & E1901D

16.813

12

0.1568