nucleolus organizer

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Noun1.nucleolus organizer - the particular part of a chromosome that is associated with a nucleolus after nuclear division
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
chromosome - a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order; "humans have 22 chromosome pairs plus two sex chromosomes"
References in periodicals archive ?
Karyotypic characterization and nucleolus organizer region in Cyprinodon dearborni (Meek, 1090) from venezuela.
Nucleolus organizer regions (NOR) were observed on the short arms of two pairs of chromosomes.
3], reinforcing the idea that this region contains the nucleolus organizer.
Staining of the nucleolus organizer regions (AgNORs) was carried following the procedure described by Howell and Black (1980).
The characterization of Ostrea denselamellosa (Mollusca, Bivalvia) chromosomes: karyotype, constitutive heterochromatin and nucleolus organizer regions.
The first cytogenetic analysis by conventional Giemsa staining, silver nitrate impregnation of nucleolus organizer regions (Ag-NOR), and fluorescenee in situ hybridization (FISH) carried out on Ophisternon aenigmaticum from Margarita Island, Venezuela, is reported.
Population differences in the expression of nucleolus organizer regions in the grasshopper Eyprepocnemis plorans.
Conservation of chromosomal location of nucleolus organizer in American marsupials (Didelphidae).
We were able to hybridize wheat probe pta71, containing a cloned monomer of the 45S rDNA nucleolus organizer rDNA repeat (NOR rDNA) labeled with Alexafluor 488-5-dUTP, to somatic metaphase and interphase chromosomes of A.
Expression of human and suppression of mouse nucleolus organizer activity in mouse-human somatic cell hybrids.