An autosomal dominant muscular dystrophy is caused by a decrease in the repeat number of a VNTR present on chromosome 4 of humans. Each repeat is 2.5 kilo base pairs ( kbp ). If the repeat number is 1 to 15 , then an individual manifests the disease. However, individuals with repeat numbers zero or more than 15 , will not manifest the disease. Using Southern hybridization technique, a diagnostic test was performed fo