DNA, RNA, and Chromosomes

How can the entire genome fit into the nucleus of a cell?

The average nucleus has a diameter of less than 5 micrometers, and the DNA (eukaryotic) has a length of 1–2 micrometers. In order to fit DNA into a nucleus, DNA and proteins are tightly packed to form threads called chromatin. These threads are so thick that they actually become visible with a light microscope.


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