Figure 4. GJA8 DNA sequence in an affected and an unaffected individual. A: DNA sequence electropherogram of an unaffected individual showing wild type T at position 905. B: DNA sequence electropherogram showing the heterozygous 905T>C substitution that replaces Leucine by Cysteine at codon 281 in the affected individual. The position of mutated (T>C) and wild type nucleotide G in an affected and an unaffected individual is indicated in the box.