NEET Botany Molecular Basis of Inheritance Questions Solved

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In a typical nucleus, some regions of chromatin are stained light and others dark.

Explain why is it so and what is its significance?                                    3 mark                                                                                                     

Light stained chromatin:

-They are the regions of chromatin which are loosely packed during interphase and are called Euchromatin.

- Euchromatin are transcriptionally active.

Dark stained chromatin:

-They are the regions of chromatin which are densely packed during cell division and are called heterochromatin.

- Heterochromatin are transcriptionally inactive.

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