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Viroids : minimal genetic systems : (RNA, plant pathogens, replication, pathogenesis)
(University of Missouri, Agricultural Experiment Station, 1980)
are not encapsidated. Despite their small size, viroids replicate autonomously in cells of susceptible plant species. Known viroids are single stranded, covalently closed circular, as well as linear, RNA molecules with extensive regions of intramolecular...
Divergent and concerted evolution of the two regions encompassing the iso-1- cytochrome c and iso-2-cytochrome c genes of yeast : (saccharomyces cerevisiae, cytochrome c of yeast, evolution of yeast, cloning yeast genes, recombinant DNA, transpositions, composite genes)
(University of Missouri, Agricultural Experiment Station, 1982)
transposition in which a circular intermediate containing the three genes integrated at a new chromosomal position. The order of the genes could have been altered if the circle closed and opened at different sites during the excision and integration...