Distinguish between heterochromatin and euchromatin. Which of the two is transcriptionally active?

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Criteria Euchromatin Heterochromatin

Definition Euchromatin is the region of DNA that is loosely packed Heterochromatin is the region of DNA that is tightly packed

Type of packaging Euchromatin is loosely packaged as it contains histone proteins wrapped around by 147 base pairs of DNA around them. Heterochromatin is tightly packaged as it contains 200 base pairs of DNA around them.

Staining Euchromatin is lightly stained. Heterochromatin is darkly stained.

Transcription Euchromatin is a transcriptionally active region of DNA. Heterochromatin is a transcriptionally inactive region of DNA.

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Difference between euchromatin and heterochromatin

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Criteria	Euchromatin	Heterochromatin
Definition	Euchromatin is the region of DNA that is loosely packed	Heterochromatin is the region of DNA that is tightly packed
Type of packaging	Euchromatin is loosely packaged as it contains histone proteins wrapped around by 147 base pairs of DNA around them.	Heterochromatin is tightly packaged as it contains 200 base pairs of DNA around them.
Staining	Euchromatin is lightly stained.	Heterochromatin is darkly stained.
Transcription	Euchromatin is a transcriptionally active region of DNA.	Heterochromatin is a transcriptionally inactive region of DNA.