Table 2.

Nonpermissive 5′-XC|XX-3′ Quartets Surrounding A⇔G Transition SNPs

Note.—Nonpermissive 5′-XC|XX-3′ quartets in the setting of (A) 20,603 exonic (chromosomes 1–8), (B) 50,244 intronic (chromosomes 1–4), and (C) 67,663 intergenic (chromosomes 1–4) A⇔G homozygous SNPs. Vertical line in each quartet indicates position of polymorphic base. Yellow highlight indicates nonpermissiveness for SNP formation in at least two of the three regions shown in (A)–(C). Numerous contexts with cytosine immediately 5′ do not predict the location of an A⇔G SNP. All quartet P values are greater than 0.05 (Compare with table 1).