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The Sod region with location and size of the five DNA fragments investigated. The DNA fragments are depicted as boxes on a line representing the section of the third chromosome of D. melanogaster where they are located. Base pair lengths are shown above. The two exons of Sod are represented as black stripes and numbered 1 and 2. The thicker line from 1819 to 2021 represents clone 112. 4039 is closest to the telomere.
