. 2001 Apr 1;29(7):1443–1452. doi: 10.1093/nar/29.7.1443

Table 4. XPG exon 15 polymorphism (G3507C; Asp1104His) allele frequencies and genotype distribution.

	NIH donors	Alleles			Genotype distribution observed [expected]^a
		total	3507G	3507C	G/G	G/C	C/C
			p	q	p²	2pq	q²
Number	91	182	135	47	51	33	7
Frequency	100%	100%	74.2%	25.8%	56% [55%]	36.3% [38.4%]	7.7% [6.6%]

^aHardy–Weinberg frequencies.