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Karyotypic characterization and nucleolus organizer region in Cyprinodon dearborni (Meek, 1090) from venezuela.

Karyotypes of Cualac tesselatus and Floridichthys carpio comments on the phylogenetic distribution of multiple sex chromosomes in North American cyprinodontids

Nucleolus organizer regions (NOR) were observed on the short arms of two pairs of chromosomes.

Karyological Analysis of Some Species of Aphanius (Osteichthyes: Cyprinodontidae) From Anatolia

Polymorphic nature of nucleolus organizer regions in fishes.

Analisis citogenetico en Salminus brasiliensis (Pisces, Characidae) del Rio Parana, Corrientes, Argentina

Controlled silverstaining of nucleolus organizer regions with a protective colloidal developper: a 1- step method .

Cytogenetics analyses among populations of the fish Iheringichtys labrosus (Kroyer, 1874) (Siluriformes, Pimelodidae). Karyotype analysis, C-banding and AgRONs distribution/ Analise citogenetica entre populacoes de peixes Iheringichtys labrosus (Kroyer, 1874) (Siluriformes, Pimelodidae). Analise cariotipica, bandamento C e distribuicao das AgRONs

Black, "Controlled silver-staining of nucleolus organizer regions with a protective colloidal developer: a 1-step method," Experientia, vol.

Comparison of the chromosome banding pattern in the 2n = 56 cytotypes of nannospalax leucodon and N. xanthodon from Turkey

For the 4 Plebeia species the heterochromatic arm of the heteromorphic pair was marked by [CMA.sub.3], reinforcing the idea that this region contains the nucleolus organizer. Furthermore, positive correlation was observed between markers Ag-NOR and [CMA.sub.3] in interphase nuclei, which showed the prevalence of G and C bases in the region of the nucleolus.

Chromosomal variation and cytogenetics of Plebeia lucii and P. phrynostuma (Hymenoptera: Apidae)

Staining of the nucleolus organizer regions (AgNORs) was carried following the procedure described by Howell and Black (1980).

Description of the karyotype of Geophagus cf. proximus (Perciformes, Cichlidae, Geophaginae)/Descricao do cariotipo de Geophagus cf. proximus (Perciformes, Cichlidae, Geophaginae)

The characterization of Ostrea denselamellosa (Mollusca, Bivalvia) chromosomes: karyotype, constitutive heterochromatin and nucleolus organizer regions.

Cytogenetic characterization of the dwarf oyster Ostrea stentina (mollusca: bivalvia) and comparative karyological analysis within ostreinae

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.

Karyotype and nucleolus organizer regions of Ophisternon aenigmaticum (Teleostei: Synbranchiformes: Synbranchidae)/ from Venezuela/Cariotipo y regiones de organizadores nucleolares de Ophisternon aenigmaticum (Teleostei: Synbranchiformes: Synbranchidae) de Venezuela ..

Population differences in the expression of nucleolus organizer regions in the grasshopper Eyprepocnemis plorans.

Supernumerany chromosome variants in Dichroplus elongatus (Acrididae): fluorescent banding and cline variation pattern

However, microchromosomes are not unimportant components of the avian karyotype, particularly given that nucleolus organizer regions in avian species are located on microchromosomes (Small 1991).

Karyotype diversity among and within avian taxa: a simple test in R

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.

C-Banding and localization of 18S-5.8S-26S rDNA in tall oatgrass species. (Crop Breeding, Genetics & Cytology)