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. 2016 Dec 21;33(6):822–833. doi: 10.1093/bioinformatics/btw762

Table 1.

SNP coding scheme of the inheritance modes

Inheritance mode with original codingb
Reverse codingb
SNP1 Maj/Mina=A/a Additive (aSNP1) Dominant (dSNP1) Recessive (rSNP1) Reverse Additive (raSNP1) Reverse Dominant (rdSNP1) Reverse Recessive (rrSNP1)
AA 0 0 0 2 1 1
Aa 1 1 0 1 0 1
aa 2 1 1 0 0 0
Data type Continuous Binary Binary Continuous Binary Binary
a

Maj/Min= major/minor allele.

b

Original modes are based on a minor allele ‘a’; Reverse coding is (1—original coding) for the dominant and recessive mode and is (2—original coding) for the additive mode.