Figure 3 of
He, Mol Vis 2008;
14:56-60.
Figure 3. DNA sequence chromatograms
DNA sequence chromatograms of the affected members (A), carriers (B), and unaffected members (C) in an X-linked idiopathic congenital nystagmus family is shown. There is a single base G>T transversion in exon 9 of FRMD7 that causes a conservative substitution of Cys to Phe at codon 271 (p.C271F). This mutation co-segregated with all affected individuals and was present in the obligate, non-penetrant carrier.