title: Informational content of polytene chromosome bands and puffs.
mesh_terms: D000818:Animals; D002871:Chromosome Banding; D002874:Chromosome Mapping; D002875:Chromosomes / Q000032:analysis*; D004330:Drosophila / Q000235:genetics; D005796:Genes; D006570:Heterochromatin / Q000032:analysis; D008956:Models, Chemical; D012313:RNA / Q000096:biosynthesis
chemical_list: D006570:Heterochromatin; D012313:RNA