Figure 2. Haplotype analysis for single nucleotide polymorphisms (SNPs) in close proximity to the RHO mutation. Frequencies [26] of the combined homozygous variants based on individual allele frequencies in the studied population are: rs789231 (CC), 0.25; RHO (AA), 0.000025; rs2855557 (AA), 0.178084; rs2625961 (GG), 0.207025.