
Promoters of stress-induced genes are preferred targets of integration. The intergenic regions were ranked by numbers of insertion and then placed into bins of 500. (A–E) The numbers of promoters induced by various environmental stresses in each bin were tabulated. The total number of promoters induced by each stress (N) is listed. (F) The number of promoters induced when cells are starved for nitrogen. (G) As a control, the bins were tabulated for the numbers of promoters they contained from a set of 500 promoters that were selected at random.











