Electron micrograph of chromatin: the beads on a string
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Electron micrograph of chromatin: the beads on a string
In this micrograph, nucleosomes are indicated by arrows.
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Each of us has enough DNA to reach from here to the sun and back, more than 300 times. How is all of that DNA packaged so tightly into chromosomes and squeezed into a tiny nucleus?
Long, slender DNA molecules wind around proteins and fold in complex ways to form chromosomes. Learn how chromosomes are more than just packaging devices for DNA.
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