Is heterochromatin or euchromatin more condensed?
Euchromatin is the lightly packed form of chromatin, whereas heterochromatin refers to the condensed form. Euchromatin and heterochromatin are functionally and structurally distinct, and have key roles in the transcription and expression of genes.
What is the most highly condensed form of chromatin?
Chromosomes seen in metaphase of mitosis are the ‘highest order’, most condensed form of chromatin. The 10 nm filament of nucleosome ‘beads-on-a-string’ remaining after a low salt extraction can be seen in an electron microscope as shown below.
What is chromatin differentiate between euchromatin and heterochromatin?
Heterochromatin is defined as the area of the chromosome which is darkly stained with a DNA specific stain and is in comparatively condensed form. Euchromatin is defined as the area of the chromosome which is rich in gene concentration and actively participates in the transcription process.
What is Heteropycnosis?
[¦hed·ə·rō·pik′nō·səs] (cell and molecular biology) Differential condensation of certain chromosomes, such as sex chromosomes, or chromosome parts.
Is the densely condensed region of the chromatin network?
Regions of DNA containing genes which are actively transcribed (“turned on”) are less tightly compacted and closely associated with RNA polymerases in a structure known as euchromatin, while regions containing inactive genes (“turned off”) are generally more condensed and associated with structural proteins in …
How is heterochromatin more frequently transcribed than euchromatin *?
Chromosomes have two structurally and functionally distinguishable territories: euchromatin and heterochromatin. Heterochromatin is highly condensed, gene-poor, and transcriptionally silent, whereas euchromatin is less condensed, gene-rich, and more easily transcribed (Huisinga et al.