This set of Affymetrix array tiles 5 Mb the Arabidopsis genome with a 12 bp overlap using in situ synthesized 25 bp oligonucleotides. Perfect match and central position mismatch probes were made for these arrays. The position coordinates in the table refer to the begining of the 2.5 Mb chromosomal fragment that was tiled on the array. This chip tiles the second half (1.25 MB) of both strands of the 2.5 Mb sequence of Chromosome 2 that was chosen for these pilot arrays.
Features that have no sequence information represent positioning grids/checkerboards or random sequence controls.