Question

Name the transcriptionally active region of chromatin in a nucleus.

Answer 1

Euchromatin:

1. Euchromatin is the loosely packed chromatin fibers that stains light and transcriptionally active region of chromatin in a nucleus.
2. DNA in the region of euchromatin is more accessible.
3. Euchromatin is loosely packed so it allows the recruitment of RNA polymerase and gene regulatory complex to initiate the transcription.
4. It contains 90% of the entire human genome.
5. Heterochromatin is densely packed chromatin fibers that stain dark. They are so compactly organized that they are inaccessible to the protein involved in gene expression, and hence transcriptionally inactive.