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Genome components in southern hemisphere conifers
Most gymnosperms have large genomes. Murray et al. (pp. 483-489) study various repetitive DNA sequences in the genus Podocarpus. Compared with pines and spruces, there are similarities in retro-elements and in telomeric sequences. However, Podocarpus has only one pair of nucleolar-organizing regions rather than the usual seven. These observations help to understand the evolution of genome diversity in these ecologically important gymnosperms.
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