Figure 1. Family structure and haplotype analysis of two Chinese families with retinitis pigmentosa. Pedigree and haplotype analysis of the families with retinitis pigmentosa (RP) showed segregation with two microsatellite markers on chromosome 3 listed in descending order from the centromeric end. Squares indicate males; circles indicate females; slashed symbols indicate deceased; solid symbols indicate affected; open symbols indicate unaffected.