Stainable material of interphase nucleus consisting of nucleic acid and associated histone protein packed into nucleosomes. Euchromatin is loosely packed and accessible to RNA polymerases, whereas heterochromatin is highly condensed and probably transcriptionally inactive.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
|Bookmark with:||word visualiser||Go and visit our forums|