The Arabidopsis tiling arrays portray several interesting classes of circadian behavior in the genome. Each symbol is a feature on the tilling array showing location in the genome (x-axis) and significance of the spectral analysis (y-axis) for (a) PSEUDO RESPONSE REGULATOR7, (b) PSEUDO RESPONSE REGULATOR9, (c) LOV KELCH PROTEIN2, and (d) ZEITLUPE. The top half of each panel displays the Watson strand and the bottom half the Crick strand. Individual features that exceed the false discovery rate 5% p-value threshold (-) are considered to have a circadian rhythm.
Hazen et al. Genome Biology 2009 10:R17 doi:10.1186/gb-2009-10-2-r17