Why Heterochromatin Is Genetically Inactive?

Why Heterochromatin Is Genetically Inactive? The two types of chromatin, heterochromatin and euchromatin, are functionally and structurally distinct regions of the genome. Heterochromatin is densely packed and inaccessible to transcription factors so it is rendered transcriptionally silent (Richards and Elgin 2002). Is heterochromatin genetically inactive? Heterochromatin mainly consists of genetically inactive satellite sequences, and many