polytene Polytene chromosome English polytene chromosomes English English polytene chromosomes polytene chromosomes polytene chromosomes polytene chromosomes Polytene chromosome English English chromosomes English English polytene chromosome English polytene chromosomes polytene chromosomes Polytene chromosome Polytene chromosome English English polytene chromosomes English polytene chromosomes Polytene chromosome English polytene chromosomes English English polytene chromosomes polytene chromosomes polytene chromosomes polytene chromosomes polytene chromosomes English polytene chromosomes polytene chromosomes polytene chromosomes polytene chromosomes polytene chromosomes polytene chromosomes English English English polytene chromosomes polytene chromosomes English English polytene chromosomes More on Wikipedia polytene chromosomes Polytene chromosome polytene chromosomes Polytene chromosome English Polytene chromosome polytene chromosomes polytene chromosomes English polytene chromosomes polytene chromosomes English English polytene chromosomes Polytene chromosome Polytene chromosome polytene chromosomes polytene chromosomes English polytene chromosomes English polytene chromosomes polytene chromosomes polytene chromosome