Map of duplicated regions identified in the Arabidopsis pseudo ancestral genome. The vertical line represents a single chromosome containing 20,187 genes ordered according to a procedure that merged the recent blocks (see text) to approximate the ancestralArabidopsis genome before the last polyploidy event. Red boxes depict the sections of the pseudo genome corresponding to merged sister regions. Other shaded boxes at right represent duplicated regions identified in the pseudo ancestral genome (colors are used for clarity and do not depict any age classification). Curved lines link paired regions, and circles depict the regions corresponding to the centromeres in the real genome.
