Table 1.

Allele distributions for DXS548, FRAXAC1, and FRAXAC2 in unaffected and fragile X Chinese populations

Alleles	Chinese				Taiwanese
	This study		Zhong et al. (1999)		Tzeng et al. (2005)
	Unaffected	FXS	Unaffected	FXS	Unaffected	FXS
DXS548
2	1 (0.002)	1 (0.036)
4			1 (0.004)
5	2 (0.004)		3 (0.013)
6	71 (0.125)	1 (0.036)	30 (0.132)	20 (0.741)	7 (0.070)
7	484 (0.855)	26 (0.928)	183 (0.806)	6 (0.222)	90 (0.900)	27 (0.964)
8	7 (0.012)		10 (0.044)	1 (0.037)	2 (0.020)	1 (0.036)
9	1 (0.002)
10					1 (0.010)
Total	566	28	227	27	100	28
EH	0.253	0.135	0.330	0.401	0.185	0.069
FRAXAC1
1	1 (0.002)	1 (0.036)
2	1 (0.002)
3	167 (0.295)	16 (0.571)	63 (0.292)	2 (0.074)	30 (0.300)	5 (0.179)
4	395 (0.698)	11 (0.393)	153 (0.708)	25 (0.926)	70 (0.700)	23 (0.821)
5	1 (0.002)
6	1 (0.002)
Total	566	28	216	27	100	28
EH	0.427	0.518	0.413	0.137	0.420	0.293
FRAXAC2
3	4 (0.007)
4	113 (0.200)	9 (0.321)
4+	2 (0.004)
5	9 (0.016)
5+	11 (0.019)	5 (0.179)
6	91 (0.161)	1 (0.036)
6+	35 (0.062)	3 (0.107)
7+	295 (0.521)	10 (0.357)
Total	566	28
EH	0.651	0.724

EH, expected heterozygosity; FXS, fragile X syndrome.