In the advance, online edition of Genome Biology this week, Swiss and American researchers used short read data and tiling arrays to find deletions in Arabidopsis genomes. In the four Arabidopsis strains or accessions they analyzed, the team found several individual deletions that were shared between two or more accessions. That, in turn, prompted them to speculate that some of the variable gene content observed in Arabidopsis might reflect common deletion events.

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