Plant genetics: RNA cache or genome trash?

Abstract excerpt

According to classical mendelian genetics, individuals homozygous for an allele always breed true. Lolle et al. report a pattern of non-mendelian inheritance in the hothead (hth) mutant of Arabidopsis thaliana, in which a plant homozygous at a particular locus upon self-crossing produces progeny that are 10% heterozygous; they claim that this is the result of the emerging allele having been reintroduced into the...

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