Clustered Ubx binding sites at the genomic loci of important developmental regulators.

<p>(A, B) UCSC Genome Browser screenshots at BX-C and <i>hth</i> gene loci show ChIP-seq fragment density tracks and Ubx peak calls, revealing many clustered binding sites. (C, D) The number of Ubx peaks per 100 kb on chromosomes 3R and 2L (each 100 kb window starts at a Ubx peak, covering all possible windows that contain at least one Ubx peak). The plots for chromosomes 2R, 3L, X and 4 are in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0161997#pone.0161997.s001" target="_blank">S1 Fig</a> Representative genes for all windows containing ≥25 Ubx peaks are labeled.