(Top) Energy dependence of the localization lengths, ξ(E), for poly(dG)-poly(dC), telomeric, random-ATGC, and λ-DNA in the presence of uniform backbone disorder with W = 1. Only every second and fifth symbol is shown for random-ATGC and λ-DNA, respectively. (Bottom) DOS for λ-DNA using the same parameters as in the top panel.