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Related to euchromatic: heterochromatic


Chromosomal material that is genetically active and stains lightly with basic dyes.

eu′chro·mat′ic (yo͞o′krō-măt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Genetics) the part of a chromosome that constitutes the major genes and does not stain strongly with basic dyes when the cell is not dividing. Compare heterochromatin
euchromatic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(yuˈkroʊ mə tɪn)

the part of a chromosome that condenses maximally during metaphase and contains most of the genetically active material.
[1930–35; < German (1928); see eu-, chromatin]
eu`chro•mat′ic (-krəˈmæt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
The spindle-shaped tumor cells had indistinct cell borders and elongate euchromatic nuclei with marked anisokaryosis and 1 prominent nucleolus per nucleus.
Microsatellites are almost ideal genetic markers because they are abundant, codominant, highly polymorphic, and spread out across the entire euchromatic part of the genome [4].
The additional material was checked with NOR staining which ruled out the satellites and confirmed the euchromatic material.
On the other hand, fibroblasts have a larger, more euchromatic nucleus and more abundant, basophilic, cytoplasm than the fibrocyte and they are more active in the connective tissue matrix fibroblasts may arise directly from mesenchymal cells or are transformed from fibrocytes under the influence of microenvironmental factors such as cytokines.[41] Fibroblasts have also been found to be a major cell type in the tumor stroma,[42,43] which was also observed in this study.
These neoplastic epithelial cells were larger than basaloid reserve cells and euchromatic (Figure 2c).
Electron microscopy enabled us to detect euchromatic nuclei, prominent nucleoli, vesicles, secondary lysosomes, and numerous rough-endoplasmic reticulum in the cytoplasm of untreated MCF-7 cells (Figure 8).
(4.) International Human Genome Sequencing Consortium: Finishing the euchromatic sequence of the human genome.
The sequence does not include all of the human genome, but only the euchromatic regions, which make up 92 percent of it; the 2003 milestone comprised 99.99 percent of the euchromatic genome to an accuracy of 99 percent.
HP1y is situated to both heterochromatic and euchromatic regions [37].
At the cytological level, heterochromatic DNA is traced as condensed chromatin blocks throughout the cell cycle, except during replication in the late S-phase [19]; the replication of euchromatic gene-rich DNA occurs earlier in the S-phase.