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Idiograms for the subgenomes of Nicotiana tabacum and the extant species representing its hypothesised parental lineages. The positions of repetitive DNA clusters used for predicting genomic relationships are shown (for details see [73]). The phylogenetic scheme on the right indicates parental species divergence and the hybridisation event (indicated by dotted line) involving a specific lineage of N. tomentosiformis.
