Distribution of distances between genes and their nearest neighbours in Arabidopsis. (A) The distribution of distances between 5'ends of genes on opposite strands is deconvoluted in two peaks showing a peak centred at 323 bp and another at 2,518 bp, the 38.4% of the genes pairs are closer than 1,000 bp. (B) Distances between 5'ends of genes on the same strand showing that 4.3% of gene pairs are closer than 1,000 bp. (C) Analysis of the distribution of distances between 3'ends of genes on opposite strands showing that 75% of the gene pairs are closer than 1,000 bp. Inset: indicate the distribution of the overlapping genes.