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Table 1 Global variation of CBS 844ins68 polymorphism in control individuals.

From: Cystathionine β-synthase T833C/844INS68 polymorphism: a family-based study on mentally retarded children

Population

2n

Heterozygosity (%)

Reference

US (mixed)

144

11.7

Tsai et al. [9]

Dutch

214

14

Kluijtmans et al. [22]

Japanese

80

0.00

Franco et al. [13]

Chinese

26

0.00

Pepe et al. [14]

Indonesian

98

0.00

Pepe et al. [14]

Ethiopian

108

11.11

Pepe et al. [14]

Spanish

54

25.9

Pepe et al. [14]

Sub-Saharan African

180

66.66

Pepe et al. [14]

German

400

1.5

Linnebank et al. [23]

Chinese (Southern China)

200

5

Zhang & Dai [15]

Italian

820

13.7

Grossmann et al. [24]

Chinese (Northern China)

248

2.97

Li et al. [25]

Indian

276

7.97

Present study

  1. 2n = No. of chromosomes