单词	heterochromatin
释义	heterochromatin /ˌhɛtərəʊˈkrəʊmətɪn / noun [mass noun] Biology Chromosome material of different density from normal (usually greater), in which the activity of the genes is modified or suppressed. Compare with euchromatin.The organization of DNA into euchromatin and heterochromatin is implicated in gene silencing.... Numerous genes act to remodel and repress chromatin in heterochromatin and around euchromatic genes during development. Thus, the density of genes in heterochromatin is about 1% of that in euchromatin.
随便看	sonny Sonny Jim sono- sonobuoy son of a bitch sonofabitch son of a gun Son of Man son of perdition sonogram sonograph sonographic sonography sonoluminescence sonoluminescent Sonoma County sonometer Sonora Sonora Desert Sonoran sonorant son (or daughter) of the manse sonority sonorous sonorously

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