Science News, February 22nd, 1997
Researchers are discovering that the chromosomes in the cellular nucleus have a remarkable organization. Some DNA sequences are consistently located at specific sites in the nucleus. Other chromosome regions move randomly in a particular location.
The cells of plants and animals are superb packers. Each cell must jam large quantities of DNA, parceled into threadlike structures called chromosomes, into a microscopic sac known as the nucleus. The 46 chromosomes in the nucleus of a human cell would extend several feet if stretched out. One of the continuing mysteries of cell biology is how a cel...
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