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Table 1 An example of assigning numerical (0, 1, 2) scores based on the genotypes of progeny and their parents (x represents an SNP allele from both parent 1 and parent 2 and y indicates that the SNP allele is not from parent 1 or parent 2)

From: An R package for SNP marker-based parent-offspring tests

Parent 1

Parent 2

Progeny

Score

xx

xx

xx

2

xx

xx

xy

1

xx

xx

yy

0