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Table 1 Genotype coding for additive, dominant, and recessive models, with D being the risk allele

From: PyHLA: tests for the association between HLA alleles and diseases

Genotype

Code

Additive

Dominanta

Recessiveb

DD

2

1

1

Dd

1

1

0

dd

0

0

0

  1. aD is dominant over d
  2. bD is recessive to d