nucleolus organizer
noun Date: 1939 the specific part of a chromosome with which a nucleolus is associated especially during its reorganization after nuclear division — called also nucleolar organizer

New Collegiate Dictionary. 2001.

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  • nucleolus organizer — n the specific part of a chromosome with which a nucleolus is associated esp. during its reorganization after nuclear division called also nucleolar organizer …   Medical dictionary

  • nucleolus organizer — branduolėlio pradas statusas T sritis augalininkystė apibrėžtis DNR dalis, lemianti ribosomines RNR. atitikmenys: angl. nucleolus organizer rus. ядрышковый организатор …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • nucleolus organizer — noun the particular part of a chromosome that is associated with a nucleolus after nuclear division • Syn: ↑nucleolus organiser, ↑nucleolar organizer, ↑nucleolar organiser • Hypernyms: ↑structure, ↑anatomical structure, ↑complex body part, ↑ …   Useful english dictionary

  • Nucleolus organizer region — The nucleolus organizer region (NOR) or nucleolar organizer is a chromosomal region around which the nucleolus forms. This region is the particular part of a chromosome that is associated with a nucleolus after the nucleus divides. The region… …   Wikipedia

  • nucleolus organiser — noun the particular part of a chromosome that is associated with a nucleolus after nuclear division • Syn: ↑nucleolus organizer, ↑nucleolar organizer, ↑nucleolar organiser • Hypernyms: ↑structure, ↑anatomical structure, ↑complex body part, ↑ …   Useful english dictionary

  • nucleolus — 1. A small rounded mass within the cell nucleus where ribonucleoprotein is produced; it is usually single, but there may be several accessory nucleoli besides the principal one. The n. is composed of a meshwork (nucleolonema) of microfilaments… …   Medical dictionary

  • nucleolus — noun (plural nucleoli) Etymology: New Latin, from Latin, diminutive of nucleus Date: 1845 a spherical body of the nucleus of most eukaryotes that becomes enlarged during protein synthesis, is associated with a nucleolus organizer, and contains… …   New Collegiate Dictionary

  • organizer — 1. Originally applied to a group of cells on the dorsal lip of the blastopore, which induce differentiation of cells in the embryo and control growth and development of adjacent parts. 2. Any group of cells having such a controlling influence,… …   Medical dictionary

  • nucleolus — A small dense body (sub organelle) within the nucleus of eukaryotic cells, visible by phase contrast and interference microscopy in live cells throughout interphase. Contains RNA and protein, and is the site of synthesis of ribosomal RNA. The… …   Dictionary of molecular biology

  • nucleolus — An RNA rich nuclear organelle in the nucleus of eukaryotic cells, produced by a nucleolar organizer. It represents the storage place for ribosomes and ribosome precursors. The nucleolus consists primarily of ribosomal precursor RNA, ribosomal RNA …   Glossary of Biotechnology

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