Figure 1
![Extent of homozygosity flanking the G6PD487A (Mahidol) allele over a 2.4-Mb region (based on Louicharoen et al. [7]). Positions of the 30 genotyped SNPs used to assess homozygosity are tagged by red arrows, and the positions of the Mahidol variant SNP and the SNP within the opsin locus are shown with orange arrows](https://sciendo-parsed.s3.eu-central-1.amazonaws.com/647066e583f1392090d68c63/j_abm-2018-0009_fig_001.jpg?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Credential=AKIA6AP2G7AKOUXAVR44%2F20251210%2Feu-central-1%2Fs3%2Faws4_request&X-Amz-Date=20251210T053507Z&X-Amz-Expires=3600&X-Amz-Signature=d7e027b3b6dc439d9f650a01c9bd1d77c687a33c8853f4a73cf1870596dbf502&X-Amz-SignedHeaders=host&x-amz-checksum-mode=ENABLED&x-id=GetObject)
Distribution of 186 male participants in terms of color blindness and G6PD deficiency genotype
| G6PD deficient (n = 37) | G6PD normal (n = 149) | |
|---|---|---|
| Normal color vision | 36 (97.3%) | 139 (93.3%) |
| (34 Mahidol, 2 Viengchan) | ||
| Red-green color blind | 1 (2.7%) | 9 (6.0%) |
| (Mahidol) | ||
| Total color blindness | 0 (0%) | 1 (0.7%) |
Haplotypes for 60 male participants G6PD Mahidol487G
G6PD Mahidol487G<A rs1573656 (G<A) N Normal color vision G G 20 G A 22 A G 14 Red–green color blind G G 3 Total color blindness G A 1
| G6PD Mahidol487G<A | rs1573656 (G<A) | N | |
|---|---|---|---|
| Normal color vision | G | G | 20 |
| G | A | 22 | |
| A | G | 14 | |
| Red–green color blind | G | G | 3 |
| Total color blindness | G | A | 1 |