Mathog D, Hochstrasser M, Gruenbaum Y, Saumweber H, Sedat J.

Nature. 1984 Mar 29-Apr 4;308(5958):414-21. doi:10.1038/308414a0

Characteristic folding pattern of polytene chromosomes in Drosophila salivary gland nuclei.

Drosophila polytene chromosome arms form isolated topoplogical domains in interphase. Centromeres are clustered near the nuclear enveloppe and telomeres tend to be on the opposite side (the Rabl conformation).