Abstract
GENETIC investigations on the inert regions in Drosophila1,2 in connexion with the cytological studies on heterochromatin (inert chromatin) and the chromocentre3–7 showed that the chromosomes have active (euchromatic) and inert (heterochromatic) segments ; the proximal parts, near the centromeres, being the heterochromatic ones. These regions conjugate in the chromocentre in the salivary gland nuclei.
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KOSTOFF, D., ARUTIUNIAN, N. Heterochromatic (Inert) Regions in the Chromosomes of Crepis Capillaris. Nature 141, 514–515 (1938). https://doi.org/10.1038/141514a0
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DOI: https://doi.org/10.1038/141514a0
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