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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