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Terrestrial Origins and Evolution
cancer cells flexible chromosomes


In contrast to normal cells, cervical cancer cells (HeLa) have flexible chromosomes. The 23 normal chromosomes have between 0 and 4 copies, while the several dozen hybrid or "marker" chromosomes have between 0 and 2. The copy numbers differ in the 20 individual HeLa cells shown, but they are nearly clonal, varying around an average clonal number. Credit: UC Berkeley

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