Body's cells can work with two meters of stringy DNA into a tiny nucleus without making a knot. The secret is a structure called a fractal globule, according to a research paper to be published tomorrow in the journal Science.
First, the researchers found that a cell's DNA is organized in two compartments: an "off" area and an "on" area. Genes that aren't being used are tightly packed into the globule that acts like a filing cabinet, storing lots of info for later use.
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