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Table 3 Allele and genotype frequencies of the -616 CG SNP in 5 populations

From: The polymorphic nature of the human dopamine D4 receptor gene: A comparative analysis of known variants and a novel 27 bp deletion in the promoter region

Origin of population

Allele frequency (%)

Genotype frequency (%)

  

2N

C

G

N

CC

CG

GG

Caucasian

Hungarian (Szantai et al., 2005)

1196

51.5

48.5

598

27.8

47.5

24.7

 

European-mixed (Barr et al., 2001)

308

72.7

27.3

154

   
 

mean

 

55.8

44.2

 

31.1*

49.3*

19.5*

 

Standard deviation

 

8.6

8.6

    

Asian

Japanese (Mitsuyasu et al., 1999)

160

28.4

71.6

80

14.9

26.9

58.2

 

Chinese (Xing et al., 2003)

412

31.1

68.9

206

6.3

49.5

44.2

 

mean

 

30.3

69.7

 

8.7

43.2

48.1

 

Standard deviation

 

1.2

1.2

 

3.9

10.1

6.3

American

Afro-American (Bookman et al., 2002)

142

28.2

71.8

71

13.0

31.0

56.0

  1. * Expected genotype frequencies were calculated from measured allele frequencies assuming Hardy-Weinberg equilibrium in the populations.