TABLE 2.

Numerical and categorical coding of a haploblock formed by two consecutive single nucleotide polymorphisms (SNPs).

Haplotype allele 1	Haplotype allele 2	Categorical coding of haploblock1	Numerical coding of haploblock
			AB	Ab	aB	ab
AB	AB	AB|AB	2	0	0	0
AB	Ab	AB|Ab	1	1	0	0
AB	aB	AB|aB	1	0	1	0
AB	ab	AB|ab	1	0	0	1
Ab	Ab	Ab|Ab	0	2	0	0
Ab	aB	Ab|aB	0	1	1	0
Ab	ab	Ab|ab	0	1	0	1
aB	aB	aB|aB	0	0	2	0
aB	ab	aB|ab	0	0	1	1
ab	ab	ab|ab	0	0	0	2

¹separates the strands of DNA. Considering this haploblock (let {A, a} and {B, b} denote alleles harbored by the two SNPs, respectively), four possible types of gametes—AB, Ab, aB, and ab—could be generated and 10 types of genotypes are possibly formed in a large population (imprinting is not considered).