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. 2003 Dec 22;1(3):e67. doi: 10.1371/journal.pbio.0000067

Figure 1. Inheritance of Transposon Activity.

Figure 1

Pollen from homozygous mutant plants (m/m) was crossed onto WT (+/+) to generate backcrossed BC heterozygous seed (m/+). The parents were also self-pollinated as a control. Each class of progeny was then tested for expression of transposon mRNA, loss of DNA methylation, and changes in histone H3 methylation. Accumulation of transposon mRNA (+) or lack thereof (−) in each progeny genotype was used to determine whether the elements were silent (“cryptic”), reversibly activated, or heritably activated (“preset”).