Research Article

Related GMR Articles

08/24/2010
Karyotype; Marker chromosome; Small supernumerary marker chromosomes; Spontaneous abortion

We report a phenotypically normal couple with repeated spontaneous abortions and without other clinical features. Clinical, hematological, biochemical, and endocrinological aspects of the couple did not reveal any abnormalities. The karyotype of the wife was normal (46,XX), while the husband was found to have an abnormal karyotype, 47,XY,+der(22)mat. The marker chromosome was familial and non- ... more

M. Balkan; H. İsi; H. İsi; A. Gedik; M. Erdemoğlu; T. Budak
07/31/2015
4'; 6-diamidino-2-phenylindole; Chromomycin A3; Fluorescence in situ hybridization; Heptapteridae; Karyotype; Nucleolar organizer regions

We cytogenetically characterized three species of Hep­tapteridae (Pimelodella sp, Pimelodella taenioptera, and Imparfinis schubarti) by investigating the distribution of constitutive heterochro­matin and nucleolar organizer regions by silver nitrate impregnation (Ag-NOR) and fluorescence in situ hybridization. Pimelodella sp showed had a diploid ... more

L.M. Barbosa; G.E.B. Ferreira; A.C. Prizon; A.L.B. Portela-Castro; I.C. Martins-Santos
02/26/2016
Chromosome number; Karyotype; Lycoris radiata; Ploidy

Lycoris radiata is an important medicinal and ornamental plant of China. In the present study, somatic chromosome counts and karyotype analyses, which are important aspects of plant phylogeny and evolution, were performed in 466 individuals from 25 L. radiata populations by root tip squash method. Chromosome counts revealed that 10 populations were diploid (2n = 2x = 22 ... more

Y.X. Liu; Y.H. Zheng; T. Xia; J. Zhou; Y.X. Liu; Y.H. Zheng; T. Xia; J. Zhou
10/24/2016
Chromosomes; Cytogeography; Karyotype; Myrtaceae; Neotropics; Polyploidy

Polyploidy is one of the most important mechanisms of speciation and diversification in plant evolution. Polyploidy results in genetic variation among individuals of the same species and even between populations, and may be responsible for differences in environmental tolerance between populations of the same species. This study determined chromosome numbers of ... more

R.M. Silveira; R.M. Machado; E.R. Forni-Martins; C.F. Verola; I.R. Costa; R.M. Silveira; R.M. Machado; E.R. Forni-Martins; C.F. Verola; I.R. Costa
2016 Dec 02
Asians; Child; Chromosome Deletion; Chromosomes, Human, Pair 2; Fingers; Heart Defects, Congenital; Hedgehog Proteins; Humans; Karyotype; male; Syndactyly; Waardenburg Syndrome

Reports of terminal and interstitial deletions of the long arm of chromosome 2 are rare in the literature. Here, we present a case report concerning a Chinese boy with a 47,XYY karyotype and a de novo deletion comprising approximately 5 Mb between 2q35 and q36.1, along with syndactyly, type III Waardenburg syndrome, and congenital heart disease. High-resolution chromosome analysis to detect ... more

D. Wang; G.F. Ren; H.Z. Zhang; C.Y. Yi; Z.J. Peng
12/23/2016
Animals; DNA, Ribosomal; Fishes; In Situ Hybridization, Fluorescence; Karyotype; Karyotyping; Nucleolus organizer region

The spotted knifejaw, Oplegnathus punctatus, is an important aquaculture fish species in China. To better understand the chromosomal microstructure and the karyotypic origin of this species, cytogenetic analysis was performed using Giemsa staining to identify metaphase chromosomes, C-banding to detect C-positive heterochromatin, silver staining to identify the nucleolus organizer regions (Ag- ... more

P.Z. Li; D.D. Cao; X.B. Liu; Y.J. Wang; H.Y. Yu; X.J. Li; Q.Q. Zhang; X.B. Wang
4/20/2017
Animals; Chromosome banding; Chromosomes; Evolution, Molecular; Fishes; In Situ Hybridization, Fluorescence; Karyotype; Phylogeny

Sphyraena (barracudas) represents the only genus of the Sphyraenidae family and includes 27 species distributed into the tropical and subtropical oceanic regions. These pelagic predators can reach large sizes and, thus, attracting significant interest from commercial and sport fishing. Evolutionary data for this fish group, as well its chromosomal patterns, are very incipient. In the present ... more

R.X. Soares; M.B. Cioffi; L.A.C. Bertollo; A.T. Borges; G.W.W.F. Costa; W.F. Molina
5/10/2017
Animals; Ecosystem; Gene flow; Genetic Speciation; Karyotype; Perciformes; Polymorphism, Genetic; RNA, Ribosomal

The distribution patterns of marine biodiversity are complex, resulting from vicariant events and species dispersion, as well as local ecological and adaptive conditions. Furthermore, the wide geographic distribution of some species may be hindered by biogeographical barriers that can interfere in the gene flow. Cytogenetic analyses in marine fishes, especially those involving populations in ... more

K.D.J. Amorim; M.B. Cioffi; L.A.C. Bertollo; R.X. Soares; L.L. Calado; A.T. Borges; G.W.W.F. Costa; W.F. Molina
5/25/2017
Animals; Carcinosarcoma; Chromosome aberrations; Dogs; Female; genomic instability; Heterochromatin; Karyotype; Mammary Neoplasms, Animal; Ploidies

This study searched a rare and aggressive type of cancer in dogs and humans, the breast carcinosarcoma. Both clinical and pathological traits of mammary carcinosarcomas in dogs are similar to humans, such as infrequent occurrence, fast tumor growth, and unfavorable prognosis when compared to carcinomas. Other possible alterations include chromosomal abnormalities that can be useful for the ... more

C.S.D. Morais; P.R.A.M. Affonso; J.A. Bitencourt; A.A. Wenceslau
9/21/2017
Animals; Chromosomes; Female; Genotype; Hybridization, Genetic; Karyotype; Liver; male; Microsatellite Repeats; Polymorphism, Genetic; Quantitative Trait, Heritable; Transcriptome; Turtles

Chinese soft-shelled turtle Pelodiscus sinensis has been an important aquaculture species in Southeast Asian countries. To breed a new variety of soft-shelled turtle with excellent properties and to evaluate the effect of hybridization of two turtle strains with a highly different trait phenotype, inheritance, microsatellite loci, and transcriptome analysis were studied in the hybrid turtles ... more

H.Q. Zhang; X.J. Xu; Z.Y. He; J.Z. Shao; X.H. Zhang; Q.H. Meng; F.Y. Huang

Pages