Abstract
IN recent years striking discoveries have been made regarding the origin and history of the nucleolus. It has como to be recognized that in every cell of a plant or animal species there is at least one pair of chromosomes which is specially concerned in producing this body. This pair of chromosomes may have either a satellite or a secondary constriction. In a satellited chromosome the exact point of origin of the nucleolus appears to be the end of the chromosome proper, where the delicate thread or filament arises which attaches the satellite (a tiny globule of chroma-tin) to the body of the chromosome. This locus has been called the nucleolar organizing body. In the telophase of mitosis each satellited chromosome gives riso to a nucleolus, while in a chromosome with a secondary constriction the nucleolus arises at the constriction.
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GATES, R. Nucleoli, Satellites and Sex Chromosomes. Nature 144, 794–795 (1939). https://doi.org/10.1038/144794a0
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DOI: https://doi.org/10.1038/144794a0
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