Figure 5
Aliquoting of tomato genome into three subgenomes. Note that between circles, which reflect the 15 hypothesized pre-hexaploid Solanum chromosomes, there are virtually no paralogies, and within circles, no paralogies within subgenomes, and many paralogies between subgenomes. Note also that several chromosomes each appear in more than one circle, reflecting chromosomal fusions in the Solanum lineage, and that most circles are labeled by more than three chromosomes because of the assorted amalgamation of fissioned parts of ancient chromosome.