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| Modern Genetic Analysis Chapter 13. Transposable Genetic Elements Controlling Elements in Maize Figure 13-28. Mosaicism through transposon mutagenesis in snapdragon (Antirrhinum). As in the corn example (Figure 13-27), the plant has both copies of an anthocyanin gene inactivated by a transposon, and albino tissue results. Revertant sectors (red spots or stripes) appear when the transposon spontaneously exits from that gene. (Photograph from Rosemary Carpenter and Enrico Coen.)

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