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Prelims Current Affairs Quiz

UPSC Prelims Current Affairs

UPSC Mains Current Affairs

January 2026

Current Affairs

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Chromatin

Chromatin is a complex of DNA and proteins found in the nucleus of eukaryotic cells. It plays a crucial role in packaging DNA into a compact form. Chromatin regulates gene expression and DNA replication. Its structure can change, influencing cellular functions. Understanding chromatin is vital for insights into genetics and epigenetics. Research in this area can impact medicine and biotechnology significantly.

Chromatin Spacing and the Physics of Gene Control

Inside every human cell, nearly two metres of DNA are packed into a nucleus just a few micrometres wide. This remarkable feat is achieved through chromatin — a...

December 29, 2025