Reports

Organization of DNA in Dipteran Polytene Chromosomes as Indicated by Polarized Fluorescence Microscopy

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Science  11 Feb 1966:
Vol. 151, Issue 3711, pp. 689-691
DOI: 10.1126/science.151.3711.689

Abstract

Analysis of the polarization of fluorescence from Drosophila virilis polytene chromosomes stained with acridine orange suggests that the DNA in the interband regions of these chromosomes cannot be in a supercoiled configuration, but must lie parallel to the chromosome axis.