Figure 4.

Chromosomal positions of all identified retroposons and their parental genes in the Arabidopsis genome. Retroposons are shown in bold red horizontal bars and the corresponding parental genes in blue bars. Orphan retroposons are shown in bold dark green bars. Retroposons resident on different chromosomes with their parental genes are linked by light gray lines or by orange lines if they locate within the same chromosome. Retroposons that belong to tandem or segmental duplications are linked by magenta lines. Centromeres of each chromosome are shown in light blue rectangles. The Arabidopsis whole genome duplication blocks are highlighted in dark yellow on each chromosome. Five chromosomes are indicated from number I to V. TAIR accession numbers of the parental genes were not shown for display convenience.