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heterochromatin

   Also found in: Medical, Encyclopedia, Wikipedia 0.04 sec.
het·er·o·chro·ma·tin  (ht-r-krm-tn)
n.
Tightly coiled chromosomal material that stains deeply during interphase and is believed to be genetically inactive.
heterochromatin [ˌhɛtərəʊˈkrəʊmətɪn]
n
(Life Sciences & Allied Applications / Biology) the condensed part of a chromosome that stains strongly with basic dyes in nondividing cells and has little genetic activity Compare euchromatin


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These heterochromatin differences are the likely cause of a striking DNA content variation (approximately 30%) between Andean and non-Andean insects.
Genomic changes of Chagas disease vector, South America by Perez, Ruben / Emerging Infectious Diseases
The nuclei were round and many were indented, and they featured both prominent nucleoli and small amounts of peripherally located heterochromatin.
Primitive neuroectodermal tumor of the mandible: Report of a rare ... by Bumpous, Jeffrey M. / Ear, Nose and Throat Journal
An increase in the mitochondrial fraction, the size of single myonuclei, and a decrease in their heterochromatin fraction were significantly more pronounced in the type II fibers than in type I fibers.
Two theories of muscle strength augmentation using percutaneous ... by Snyder-Mackler, Lynn / Physical Therapy
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