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Updated: Jul 6, 2026

Labeling of Single Cells in the Central Nervous System of Drosophila melanogaster
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Published on: March 4, 2013

The segmentation and homeotic gene network in early Drosophila development

M P Scott1, S B Carroll

  • 1Department of Molecular, Cellular and Developmental Biology, University of Colorado, Boulder 80309.

Cell
|December 4, 1987
PubMed
Abstract

No abstract available in PubMed .

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In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.