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Table 3 Genotype frequency distributions of SNP8 in pedigrees (Sample 4)

From: Recessive genetic mode of an ADH4 variant in substance dependence in African-Americans: A model of utility of the HWD test

  European-American African-American
  AD DD Unaffected AD DD Unaffected
  N f N f N f N f N f N f
A/A 271 0.903 541 0.905 85 0.895 293 0.945 626 0.963 127 0.992
A/G 26 0.087 53 0.089 8 0.084 16 0.052 24 0.037 1 0.008
G/G 3 0.010 4 0.007 2 0.021 1 0.003 0 0.000 0 0.000
A 568 0.947 1135 0.949 178 0.937 602 0.971 1276 0.982 255 0.996
G 32 0.053 61 0.051 12 0.063 18 0.029 24 0.018 1 0.004
  1. AD, alcohol dependence; DD, drug dependence.