Distribution chromosome banding. Medical search. Frequent questions

Among the analyzed specimens, a large degree of cytogenetic variation related to diploid numbers and karyotype structure was observed, with karyotypes showing 2n=42, 44 and 46 chromosomes. (scielo.br)
Also, the analyses indicate that chromosomal rearrangements occurred independently within the distinct lineages of S . marmoratus complex, which resulted in the appearance of distinct karyotypic variants in a non-linear fashion related to diploid numbers and in the appearance of similar non-homologous chromosomes. (scielo.br)
Typically, when a diploid cell divides, it first duplicates each of its chromosomes. (jove.com)
The S. taurensis karyotype differs from that of S. xanthoprymnus by a low diploid number, by a C-positive Y chromosome, and by the number and localization of NORs. (tubitak.gov.tr)
Diploid chromosome number was 2n = 50 and karyotype consisted of 7 pairs of metacentric, 13 pairs of submetacentric, 5 pairs of subtelo- to acrocentric chromosomes, NF value equaled 90. (egejfas.org)

These data indicate a non-random distribution of chromosomal aberrations induced by nifurtimox therapeutic treatment. (nih.gov)
Understand- ing the mechanisms of the origin of such aberrations would give us a better insight in the structure and function of the chromosomes and this is one aspect of the present volume, namely, the basic one. (pdfroom.com)
The following topics are discussed: chromosome structure, repair of genetic dam- age and chromosomal aberrations (Chaps. (pdfroom.com)

This results in the formation of unique, giant chromosomes, called polytene chromosomes. (jove.com)
When viewed under a microscope, an alternating pattern of dark bands and lighter interbands can be seen in the polytene chromosomes. (jove.com)
Polytene chromosomes are structures found in highly specialized tissues in some animal and plant species, which are amplified through successive cycles of endoreduplication, finally producing several copies of each chromosome. (scielo.br)
In plants, polytene chromosomes have been observed in only a few species, and seemed to be restricted to ovary and immature seed tissues, e.g., in Phaseolus coccineus and P. vulgaris (Nagl, 1981), until relatively recently, when they were observed in the cells of the anther tapetum of Vigna unguiculata (Guerra and Carvalheira, 1994) and of some Phaseolus species (Carvalheira and Guerra, 1994). (scielo.br)
1985) described polytene chromosomes as giant chromosomes produced by changes in the mitotic cycle during the interphase stage. (scielo.br)

Here, hundreds to thousands of copies of each chromosome are generated without any cell division. (jove.com)

Because of their distribution in the nervous system and because n-syb, synaptotagmin, and drab3 do not appear to be in a family of functionally redundant homologs, we predict that mutation of these genes will have a profound neurological phenotype and that they are therefore good candidates for a genetic dissection in Drosophila. (jneurosci.org)
Future reports could continue to delineate the description, considering the relationship between the chromosome segment and the genes involved. (bvsalud.org)
Here we demonstrate that the nucleotide substitution which distinguishes the cluster-4 and CD24 antigen genes is due to an allelic polymorphism on chromosome band 6q21. (ox.ac.uk)
With the human DNA probe, signals were detected in the major sites of the ribosomal genes on chromosomes 5I (7H) and 6I (6H) only when the chromosome preparations were obtained using an optimized technique with obligatory pepsin treatment followed by hybridization. (centrocardiobogota.com)

BACKGROUND Smith-Magenis syndrome (SMS) is a multiple congenital anomalies/mental retardation syndrome associated with a hemizygous deletion of chromosome 17, band p11.2. (bmj.com)
Intermediate deletion of chromosome 7 between bands 21 and 22 was observed (arrow indicates the deleted segment). (ogscience.org)

Cytogenetically, the species of the genus Melipona show variation in the amount and distribution of heterochromatin along their chromosomes and can be separated into 2 groups: the first with low content of heterochromatin and the second with high content of heterochromatin. (karger.com)
In general, Melipona species have 2n = 18 chromosomes, and the species of each subgenus share the same characteristics in relation to heterochromatin regions, DAPI/CMA 3 fluorophores, and the number and distribution of 18S rDNA sites. (karger.com)
The last updated list of Paraguayan mammals was published in 2002, but increased research efforts since that time have brought about numerous changes in the taxonomy and known distribution of many species. (scielo.org.mx)
Because the Paraguay River has been considered a significant biogeographic boundary, the distribution of each species (east of the river, west of the river, present on both sides) is tabulated as well. (scielo.org.mx)
2006). Karyotypic relationships among the tribes of Hypostominae (Siluriformes: Loricariidae) with description of XO sex chromosome system in a Neotropical fish species. (geneticsmr.com)
The C-band pattern varied between species and, together with the NOR, allowed the identification of two evolutionary units in P. gr. longicaudatus in the region of the mid Madeira River (cytotypes A and B). The morphology and banding of the sex chromosomes were species specific. (geneticsmr.org)
Moreover, we suggest that species of Proechimys with 2n = 38 chromosomes are restricted to east of the Negro River and north of the Amazon River. (geneticsmr.org)
Primate classification and distribution of extinct and extant species. (successcds.net)
The karyotype pattern and simple NOR phenotype of S. anatolicus are nearly identical with that found not only in Squalius species analyzed to date but also in many other representatives of the Eurasian leuciscine cyprinids, which indicates remarkable chromosome stasis in this leuciscid lineage. (egejfas.org)
Comparative molecular cytogenetic analysis of three Leuciscus species (Pisces, Cyprinidae) using chromosome banding and FISH with rDNA. (egejfas.org)

To better understand the karyotype organization in Melipona and the relationship among the subgenera, we mapped repetitive sequences and analyzed previously reported cytogenetic data with the aim to identify cytogenetic markers to be used for investigating the phylogenetic relationships and chromosome evolution in the genus. (karger.com)
The karyotype of Spermophilus taurensis comprised 40 chromosomes, the fundamental chromosome number (NF) was 80, and there were 76 autosomal arms (NFa). (tubitak.gov.tr)
The karyotype and distribution of constitutive heterochromatin and nucleolus organizer regions (NORs) of Anatolian leuciscine endemic to Lake Beysehir, Squalius anatolicus (Bogutskaya, 1997) were analyzed respectively using conventional Giemsa-staining, C-banding and Ag-impregnation. (egejfas.org)

These heterochromatin patterns and the number of chromosomes are characteristics exclusive to Melipona karyotypes that distinguish them from the other genera of the Meliponini. (karger.com)
C-banding patterns was developed in the course of investigation of the karyotypes of cotton plant, camomile, flax, and pea. (centrocardiobogota.com)
They are mainly based on the C- and, N-banding techniques yielding similar patterns. (centrocardiobogota.com)

The duplicated chromosome was characterized by cytogenetics, multicolor banding FISH, and SNP array. (bvsalud.org)
A questionnaire sent to major cytogenetics laboratories in the United States and Canada over a 10-year period collected data on the frequency and outcome of cases with either apparently balanced de novo rearrangements or de novo supernumerary marker chromosomes detected at amniocentesis. (nih.gov)

Nature and distribution of constitutive heterochromatin in fishes, genus Hypostomus (Loricariidae). (geneticsmr.com)
C-banding revealed clear pericentromeric constitutive heterochromatin blocks in several chromosomes. (egejfas.org)

All autosomes and the X chromosome had pericentromeric C-heterochromatin, whereas the Y chromosome appeared to be entirely heterochromatic. (tubitak.gov.tr)

Finally, the integration of both molecular cytogenetic and phylogenetic approaches allowed the determination of specific chromosomes possibly involved in rearrangements and a better understanding about the evolutionary processes involved in the differentiation of Synbranchus genus. (scielo.br)
Neanderthal man: Distribution, salient features and phylogenetic position. (successcds.net)

Distribution, characteristics and classification. (successcds.net)

Analysis and interpretation of recurrent and non-recurrent abnormalities associated with lymphoma: online G-banded analysis with supplementary tests as applicable and/or FFPE slides or fixed cell suspensions for interphase FISH studies. (ukneqas.org.uk)

Such cells, called polyploid cells, contain multiple sets of each chromosome. (jove.com)
The endomitotic cycle (endomitosis) starts with a normal prophase (endoprophase), after which the chromosome contracts further (endometaphase), their sister chromatids separate from each other (endoanaphase) and decondense to assume the interphase nuclear structure, resulting in polyploid cells, with double the chromosome number (endopolyploidy) at the end of each cycle. (scielo.br)

We demonstrated the wide mosaic distribution of the 11q duplication by interphase FISH in tissues from different embryonic germ layers. (bvsalud.org)
These features exist in ordinary interphase chromosomes but are difficult to observe. (jove.com)

results can serve as an important argument in favour of the proposal to develop a special program for sequencing the genome chromosomes and for, To estimate the possibility of plant genome mapping using human genome probes, the probes fluorescent in situ hybridization (FISH) of human 18S-28S rDNA (clon 22F9 from the LA-13NCO1 library) was carried out on chromosomes of the spring barleyHordeum vulgareL. (centrocardiobogota.com)

Comparison of the human with the sheep genomes by use of human chromosome-specific painting probes. (cnr.it)

Nevertheless, there did appear to be a correlation between those bands in which breakage was observed most often and those bands where common or rare fragile sites have been described. (nih.gov)

These sites were carefully selected to include all of the mosquito genetic diversity known to exist in the region (three molecular forms and chromosome inversion polymorphism). (ucdavis.edu)
The distribution pattern of this allelic polymorphism in SCLC cell lines and leukocytes of healthy donors did not reveal any obvious relationship with disease. (ox.ac.uk)

Heterochromatin distribution and nucleolar organizer regions (NORs) in chromosomes of the Taurus ground squirrel, Spermophilus taurensis Gunduz et al. (tubitak.gov.tr)
The distribution of C-heterochromatin blocks and nucleolar organizer regions (NORs) in the Taurus ground squirrel from Turkey was studied. (tubitak.gov.tr)
NORs were observed in the terminal regions of the short arm of 2 pairs of submetacentric and 2 pairs of subtelocentric chromosomes. (tubitak.gov.tr)
Ag-impregnation revealed the size heteromorphism of NORs that covered almost the entire short arms of the middle-sized submetacentric chromosome pair. (egejfas.org)

Gardner syndrome is caused by mutation in the adenomatous polyposis coli (APC gene), located in chromosome 5q21 (band q21 on chromosome 5). (wikipedia.org)
It is determined by the autosomal dominant familial polyposis coli gene (APC) on chromosome 5 . (wikipedia.org)
The small cell lung cancer antigen cluster-4 and the leukocyte antigen CD24 are allelic isoforms of the same gene (CD24) on chromosome band 6q21. (ox.ac.uk)
We suggest, however, that the gene on 6q21 is the active locus since the mRNA of cell lines always represents the allelic variants found on chromosome 6. (ox.ac.uk)
[ 1 ] As this gene is carried on the X chromosome, the disease usually manifests in males and is transmitted by females who carry the causative mutation on one of their X chromosomes. (medscape.com)
gene is mapped on the wheat chromosome 5B, but, neither obtaining a physical marker nor microdissec-, tion of this chromosomal region gave practical results, [56]. (centrocardiobogota.com)

As Drosophila larvae progress from one developmental stage to another, specific bands and interbands greatly increase in diameter, producing structures called 'Puffs' or 'Balbiani' rings. (jove.com)
Preface Eukaryotic chromosomes are complex structures containing very long DNA molecules, histones, and nonhistone proteins. (pdfroom.com)
Contents Quantitative Detection of Chromosome Structures by Computerized Microphotometric Scanning (With 8 Figures) M.E. DRETS, G.A. FOLLE, and F.l. (pdfroom.com)

pairs of autosomes and 1 pair of sex chromosomes (XY in Institut de Recherche pour le Développement, Montpellier, males, XX in females) (8). (cdc.gov)

Continued collecting of tissues and vouchers, as well as an examination of museum specimens, is necessary to address numerous unsolved questions concerning distribution, taxonomy, ecology, biogeography, population biology and the effects of anthropogenic modification. (scielo.org.mx)
Distribution of the Ceylonese type black rats was studied in 90 specimens obtained in 10 localities of Sri Lanka. (go.jp)

A heteromorphic ZZ/ZW sex chromosome system in fish, genus Hypostomus (Loricariidae). (geneticsmr.com)

The risk of abnormality for extra nonsatellited marker chromosomes was 14.7% (n = 68), and that for satellited marker chromosomes was 10.9% (n = 55). (nih.gov)

Comparative FISH mapping of bovid X chromosomes reveals homologies and divergences between the subfamilies bovinae and caprinae. (cnr.it)

The incidence of the syndrome is 1:14,025 with an equal sex distribution. (wikipedia.org)
Gardner's syndrome (GS), also known as familial colorectal polyposis, is an autosomal dominant disorder with equal sex distribution and a prevalence ranging from 1:8,300 to 1:16,000 births 1 . (bvsalud.org)

The Chinese Funa is characterized by the second largest chromosomes with remarkable C-bands on their short armes as markers. (go.jp)

Certain cells undergo multiple cycles of chromosome duplication without undergoing any cell division. (jove.com)
In the endoreduplication cycle, the chromatid number is duplicated, but they do not segregate, and after various endoreduplication cycles, larger and thicker chromosomes are produced, called polytenics. (scielo.br)

Conventional G-banding karyotyping was performed on metaphase mitotic cells obtained from amniotic fluid, according to standard procedures. (ogscience.org)

In the Chinese Funa ( Carassius auratus auratus ), the C-banding pattern of chromosomes is investigated. (go.jp)

ZOO-FISH and R-banding reveal extensive conservation of human chromosome regions in euchromatic regions of river buffalo chromosomes. (cnr.it)
Chromosomal characterization of three centric fusion translocations in cattle using G-, R- and C-banding and FISH technique. (cnr.it)
Thirteen type I loci from HSA4q, HSA6p, HSA7q and HSA12q were comparatively FISH-mapped in four river buffalo and sheep chromosomes. (cnr.it)

In addition, we identified by Southern blotting and PCR of DNA from somatic human x hamster hybrid cell lines homologues of cluster-4/CD24 on the Y chromosome and chromosome 15. (ox.ac.uk)

A neuronal Drosophila vamp (n-syb) is described here and is localized to chromosome band 62A. (jneurosci.org)
This distribution suggests that these molecules are components of synaptic vesicles in Drosophila. (jneurosci.org)

Taxonomic distribution of proteins containing WW domain. (embl.de)
The impact of nonhistone proteins on the structure of chromosomes is still a mystery. (pdfroom.com)

In non-Robertsonian rearrangements, distribution of breakpoints among chromosomes was not as would be expected strictly on the basis of length. (nih.gov)

Chromosome 7q deletion is a relatively rare chromosomal syndrome that is classified by the location of the deleted segment, as follows: proximal (7q11→21), intermediate (7q21→32), or terminal (7q32→qter) [ 1 ]. (ogscience.org)
Down Syndrome is a genetic disorder caused by the presence of the third copy of chromosome 21 (total or partial). (bvsalud.org)
Down Syndrome (DS) is a genetic disorder caused by the presence of the third copy of chromosome 21 (total or partial). (bvsalud.org)

In this paper some aspects of the occurrence of plant polytenes will be summarized along with the structure and function of these chromosomes. (scielo.br)
Up to the present time, there is no, real success in obtaining pure fractions of individual, plant chromosomes by ﬂow sorting. (centrocardiobogota.com)

Spectroscopic measurements of microscopic regions of a sample provides information about the spatial distribution of molecules in the sample. (jasco.de)

7- 9), chromosomes and cancer (Chaps. (pdfroom.com)

The Tier 2 process for occupational exposure banding also assesses the sufficiency of toxicity data to ensure that adequate information is available to reliably band a chemical. (cdc.gov)

A range extension is suggested for the geographic distribution of P. gardneri and P. gr. longicaudatus. (geneticsmr.org)

In this study, we show that a reduction in the levels of the JIL-1 histone H3S10 kinase results in the spreading of the major heterochromatin markers dimethyl H3K9 and HP1 to ectopic locations on the chromosome arms, with the most pronounced increase on the X chromosomes. (silverchair.com)
If the Tier 1 evaluation results in a band E, Tier 2 is optional given that band E represents the lowest exposure concentration range and a Tier 2 process would not result in a more stringent recommendation. (cdc.gov)

The Vector Genetics lab, in collaboration with the laboratory of Dr. Shirley Luckhart in the Department of Medical Microbiology and Immunology, School of Medicine at UC Davis, have chosen to address this issue using a SNP association approach with field-collected mosquitoes from Mali and Cameroon, countries with high malaria transmission that include the geographic distribution of the most genetically diverged A. gambiae populations yet described. (ucdavis.edu)

Earlier, unpublished versions of the NIOSH Occupational Exposure Banding process included band-specific ranges that approximate the GHS hazard categories, but has refined these cut points based on exposure response analyses, comparisons of OEBs to current OELs, and technical expertise. (cdc.gov)

Most breaks were stated to occur within G-negative bands, but there was little evidence of particular hot spots among these bands. (nih.gov)

From the chemical images and the principal component analysis spectra, the distribution of polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET) can be visualized. (jasco.de)

Anatomy66

Organisms12

Diseases29

Chemicals and Drugs28

Analytical, Diagnostic and Therapeutic Techniques and Equipment26

Psychiatry and Psychology1

Phenomena and Processes170

Disciplines and Occupations1

Technology, Industry, Agriculture2

Information Science4

Health Care1

Diploid5

Aberrations3

Polytene chromosomes5

Copies of each chromosome1

Genes4

Deletion of chromosome2

Species10

Karyotype3

Patterns3

Cytogenetics2

Constitutive heterochromatin2

Pericentromeric1

Phylogenetic2

Characteristics1

Abnormalities1

Polyploid cells2

Interphase2

RDNA1

Genomes1

Breakage1

Polymorphism2

NORs4

Gene6

Structures3

Autosomes1

Specimens2

Genus1

Marker1

Mapping1

Equal sex distribution2

Remarkable1

Cycles2

Mitotic1

Pattern1

FISH3

Homologues1

Drosophila2

Proteins2

Rearrangements1

Syndrome3

Plant2

Molecules1

Cancer1

Toxicity1

Extension1

Results2

Geographic distribution1

Specific1

Occur1

Analysis1