• Determination of number/position of chromosome-sized bands and chromosomal DNA locations of housekeeping genes were the two criteria used for differentiating and classifying the Leishmania species. (fiocruz.br)
  • Clear differences between the Old and New world groups of parasites or among some New World Leishmania species were also apparent in relation to the chromosome locations of beta-tubulin genes. (fiocruz.br)
  • They found that during evolution, a reshuffling of DNA known as translocation brought together separate chunks of sex-determining genes onto a single chromosome, essentially mimicking the human X or Y chromosome. (phys.org)
  • In the 1960's, Japanese-American geneticist and evolutionary biologist Susumu Ohno proposed a theory in which the genes determining sex first arose at various spots scattered across the entire genome , but over time were "captured" on the sex chromosomes. (phys.org)
  • In C. amylolentus , dozens of genes at two different locations on the chromosomes control what's called a tetrapolar, or four-part, mating system. (phys.org)
  • The researchers sequenced the entire genome of C. amylolentus , mapping the location of all the genes as well as the centromeres on each of the organism's 14 chromosomes. (phys.org)
  • A better understanding of how these species cause disease and spread antibiotic resistance requires a knowledge of how its genes are controlled, on both the DNA and the RNA level. (frontiersin.org)
  • In previous work we identified a region near the centromere of barley chromosome 6H that harbored two closely linked net form net blotch resistance genes (rpt.r and rpt.k). (usda.gov)
  • This work refines the genetic and physical location of rpt.r and rpt.k and provides an initial step towards the map-based cloning of these two genes. (usda.gov)
  • In a series of papers, Serebrovsky (1930), Dubinin (1929), Agol (1930) and their colleagues have described an extremely interesting group of bristle-reducing mutant genes lying at the scute locus of the X-chromosome of Drosophila melanogaster. (caltech.edu)
  • A recent paper in this journal by Detlefsen(1) is introduced as follows: "There is a well intrenched concept of recent genetics that hereditary factors or genes may be given fairly definite loci on chromosome maps and that these maps correspond to or represent, roughly perhaps, the actual conditions in the chromosome. (caltech.edu)
  • Morgan considered these two genes as lying in a "second chromosome," the first chromosome being the sex chromosome. (caltech.edu)
  • That suggested that the chemical modifications of genes could be mapped out using SMRT sequencing. (vetscite.org)
  • Analysis of genes flanking both FXY/MID1 and FXY2 (as well as their counterparts in mouse) suggests that these regions may have arisen as a result of an intrachromosomal duplication on an ancestral X chromosome. (monash.edu)
  • Our long-term goal is to develop the necessary gene mapping tools for feline geneticists to identify and characterize genes causing disease in cats. (vin.com)
  • Like most EGF-TM7 receptor genes, EMR4 is localized on the short arm of chromosome 19, in close proximity to EMR1. (nih.gov)
  • We further studied the collinearity between these genes and related genes of six other species. (biomedcentral.com)
  • A linkage map is a genetic map of a species or experimental population that shows the position of its known genes or genetic markers relative to each other in terms of recombination frequency, rather than a specific physical distance along each chromosome. (assignmentexpert.com)
  • Such linkage mapping becomes critical for identifying the location of genes that cause genetic diseases. (assignmentexpert.com)
  • Here, we provide the first cytogenetic information on the species based on both conventional karyotyping and chromosomal mapping of 45S and 5S ribosomal genes through fluorescence in situ hybridization (FISH). (scielo.br)
  • Both classes of ribosomal genes appeared to be spread out to multiple chromosomal locations, i.e. the 45S and 5S rDNA clusters were detected on six and seven chromosome pairs, respectively. (scielo.br)
  • Through chromosome mapping, scientists can pinpoint the exact locations of genes associated with genetic disorders, enabling early detection and treatment. (facts.net)
  • Chromosome mapping allows researchers to identify the genes responsible for complex traits such as intelligence, height, and susceptibility to diseases. (facts.net)
  • Fifteen newly developed markers were added to the previous map, and most were closely linked to the resistance loci. (usda.gov)
  • Data from this work suggest that the resistance loci are most likely located on the long arm of chromosome 6H. (usda.gov)
  • Comparative analysis revealed that a 12.6 cM region containing the two resistance loci is colinear with a region of rice chromosome 2 between 23.7 and 29.9 Mb with only a few rearrangements, and nearly the same level of colinearity was observed between barley and Brachypodium in this region. (usda.gov)
  • Five of these lie in the X-chromosome, and a study of their linkage relations was shown to indicate that the sequence of the five loci concerned is the same in both species, and that the percentages of crossing over in comparable regions, while not indentical, is still not very different. (caltech.edu)
  • The sex is principally determined by genotype in all species, but the mechanisms range from a single controlling locus to sex chromosomes bearing several linked loci required for sex determination. (researchgate.net)
  • The establishment of synteny maps will provide a powerful tool to investigate the quantitative conservation of map location of trait loci across species and environments. (le.ac.uk)
  • The map position of cDNA clones relative to the predicted location of quantitative trait loci will provide new opportunities to unravel the genetic control of polygenic traits in forest tree species. (le.ac.uk)
  • Lateral gene transfers resulted in different linkages between the ospC gene and loci of the chromosome or other plasmids. (cdc.gov)
  • In this study, the researchers showed that in Cryptococcus amylolentus, the ancestral state, the P/R locus resided on chromosome 10 and the HD locus on chromosome 11. (phys.org)
  • The location of this clock gene was delimited by the molecular mapping of chromosome aberrations at or very near the per locus. (nih.gov)
  • It seems probable that the scheme outlined in this paper will apply for the case of inversions that do not include the locus of the spindle attachment and for other chromosome aberrations in which crossing-over gives rise to chromatids with two spindle attachments, and where the conditions of meiosis are such that (a) the meiotic spindles are oriented so that the reduced nuclei lie approximately on a single straight line, and (b) only one of the terminal nuclei functions in further development. (caltech.edu)
  • This gene maps to a locus on the short arm of X chromosome were locates several traits of TS, including ovarian failure. (endocrine-abstracts.org)
  • Segregating populations will be characterised with both single locus (microsatellites) and multi-locus (AFLPs) marker systems providing framework maps for the eventual location of cDNAs generated from single pass sequencing. (le.ac.uk)
  • An examination of the content and distribution of repetitive DNA sequences to identify the location of such sequences within specific chromosomes and their conservation across species of the Pinaceae family. (le.ac.uk)
  • By examining specific chromosomes, medical professionals can determine the sex of a fetus during pregnancy. (facts.net)
  • Alignments with sequenced genomes of rice and Brachypodium provide evidence for extensive conservation of genomic regions, and renewed encouragement for orthology-based genomic discovery in this important hexaploid species. (aber.ac.uk)
  • Pulsed-field gel electrophoresis of intact genomic DNA of Vibrio cholerae isolates and circular representation of the genome of V. cholerae O1 El Tor TSY216, consisting of 3 chromosomes. (cdc.gov)
  • In order to better understand the genomic forces driving the evolution of Echinochloa species toward weed and crop characteristics, we assemble genomes of three Echinochloa species (allohexaploid E. crus-galli and E. colona , and allotetraploid E. oryzicola ) and re-sequence 737 accessions of barnyard grasses and millets from 16 rice-producing countries. (nature.com)
  • Our results provide genomic insights into the dual roles of Echinochloa species as weeds and crops as well as essential resources for studying plant polyploidization, adaptation, precision weed control and millet improvements. (nature.com)
  • It can be accessed online at www.helmholtz-hiri.de/en/datasets/enterococcus through an instance of the genomic viewer JBrowse. (frontiersin.org)
  • By comparative genomic hybridization using DNA from sperm and unfertilized eggs of this coral, we offer evidence suggesting the existence of sex chromosomes in this species. (bioone.org)
  • The ADAMTS13 gene is mapped to chromosome 9q34 by genomic sequence analysis. (iowaodes.com)
  • The resonrces developed in this project will facilitate development of genetic maps in Festuca and I'olium, the anďysis of genomic constitution in Festuca x Lolium hybrids, as well as marker-assisted selection for multiple traits. (cas.cz)
  • You are able to load genomic, genetic or radiation hybrid maps. (animalgenome.org)
  • All comparitive maps are based on the UCSC synteny for genomic maps. (animalgenome.org)
  • In the current version of VCMap, if you wish to load genetic or radiation hybrid comparative map, the genomic version of that map must be loaded before the genetic or radiation hybrid comparative map. (animalgenome.org)
  • In a new study, an international research team found that this genetic colour variation that is shared between several species arose through changes in a specific genomic region at least five million years ago. (lu.se)
  • Since amniotes diverged from a common ancestor, their sex chromosome pairs and, more broadly, sex-determining mechanisms have changed reversibly and frequently. (harvard.edu)
  • however, construction of such a map in oat (Avena sativa L., 2n = 6x = 42) has been hindered by the size and complexity of the genome, the scarcity of robust molecular markers, and the lack of aneuploid stocks. (aber.ac.uk)
  • With each translocation, the genome is altered again and again, until you have evolved an entirely new species. (phys.org)
  • This chromosome map is useful for genome studies of wheat and its relatives while the wheat lines carrying the chromosome segments from tall wheatgrass are a valuable genetic resource for wheat improvement. (usda.gov)
  • Genomics: this is one of the species selected by the Genome 10K consortium for complete genome sequencing. (reptarium.cz)
  • A new DNA sequencing technique has enabled researchers to map for the first time the influential chemical modifications known as methylation marks throughout the genome of a pathogenic bacterium. (vetscite.org)
  • Waldor's group went even further than analyzing a single gene: they used SMRT to map the methylation patterns of the entire E.coli O104:H4 genome. (vetscite.org)
  • The present study used genome-wide mapping of meiotic DNA double-strand breaks - sites where recombination begins - in diverged Saccharomyces species. (mskcc.org)
  • This study will cytogenetically map 110 large-insert clones from the feline genome assembly to connect the cat gene maps to each feline chromosome. (vin.com)
  • The cytogenetic map will add an extra level of quality control to the feline genome maps, which will better enable feline researchers to identify the genetic bases of feline diseases and will enhance the health of the species. (vin.com)
  • With the ďm to facilitate high-throughput genome profiling and genetic and physical mapping within the Festuca-Inlium, gomplex, we have developed a Diversity Arrays Technology (DArT) array for five important species: Festuca pratensis, Festuca arundinacea, Festuca glaucescens, Inlium perenne and Lolium multiflorum. (cas.cz)
  • Considerable progress has been achieved in Conifer genome mapping by the use of megagametophyte tissue and RAPDs (3). (le.ac.uk)
  • Cross-Species BAC Mapping Highlights Conservation of Chromosome Synteny across Dragon Lizards (Squamata: Agamidae). (reptarium.cz)
  • Determine level of synteny or conservation of gene order between species within the Pinaceae family. (le.ac.uk)
  • Resources developed in this study include a modified SNP discovery method for complex genomes, a diverse set of oat SNP markers, and a novel chromosome-deficient SNP anchoring strategy. (aber.ac.uk)
  • These results also provide a framework for high-resolution genetic analysis in oat, and a model for marker development and map construction in other species with complex genomes and limited resources. (aber.ac.uk)
  • They found that the genomes had undergone quite a bit of rearrangement since the two species shared a common ancestor, at least 50 million years ago. (phys.org)
  • This has facilitated homoeologous recombination-based partitioning and engineering of their genomes for physical mapping and alien introgression. (usda.gov)
  • Construction of comprehensive, informative second generation linkage maps for three Conifer genomes. (le.ac.uk)
  • He and an international team of researchers focused on the last common ancestor of the human pathogen Cryptococcus neoformans and its nearest sibling species, a non-pathogen called Cryptococcus amylolentus . (phys.org)
  • It is widely thought that all of the billions of species on Earth are descended from a common ancestor. (elifesciences.org)
  • GoldenGate genotyping of 3,072 SNP assays yielded 1,311 robust markers, of which 985 were mapped in 390 recombinant-inbred lines from six bi-parental mapping populations ranging in size from 49 to 97 progeny. (aber.ac.uk)
  • The salivary gland chromosome technique has made it possible to demonstrate not only that these are inverted sections, but also that there are many different inversions present in wild populations inhabiting different geographical regions. (caltech.edu)
  • 2005). The species appears to be semelparous (Gjøsæter and Loeng, 1987), although females from fjord populations may survive to spawn a second time (Christiansen and Siikavuopio, 1998). (scielo.br)
  • By analyzing the genetic markers on chromosomes, scientists can reconstruct ancient migration routes and understand the movements of different populations. (facts.net)
  • For comparison, we also counted neuronal populations in three divergent mosquito species: Aedes aegypti, Anopheles coluzzii and Culex quinquefasciatus. (bvsalud.org)
  • This has significance both for conservating species and for the future evolutionary potential of populations to adapt to rapidly changing environments. (lu.se)
  • We therefore attempt to study the early evolution of sex chromosomes using a variety of methods, including characterization of new portions of the sex chromosome in natural populations, and experimental evolution of sex chromosomes in the lab. (lu.se)
  • We have established two gel running conditions for optimal separation of chromosomes, which resolved DNA molecules as large as 2,500 kilobase pairs (kb). (fiocruz.br)
  • Variability among sex chromosome pairs in amniotes denotes a dynamic history. (harvard.edu)
  • NtbZIP s were unevenly distributed across twenty-two tobacco chromosomes, and we found sixteen pairs of segmental duplication. (biomedcentral.com)
  • We present a comprehensive gene coevolution network inferred from the examination of nearly three million orthologous gene pairs from 332 budding yeast species spanning ∼400 million years of eukaryotic evolution. (biorxiv.org)
  • The consensus map included 985 SNPs and 68 previously-published markers, resolving 21 linkage groups with a total map distance of 1,838.8 cM. (aber.ac.uk)
  • By using these lines, we constructed a chromosome map with newly-developed DNA markers specific for the wheatgrass chromosome. (usda.gov)
  • Additionally, we developed 22 SNP-derived semi-thermal asymmetric reverse PCR (STARP) markers specific for chromosome 3E and constructed a comparative map of homoeologous chromosomes 3E, 3B, 3A, and 3D. (usda.gov)
  • In this study, we mined expressed sequence tag (EST) databases developed from barley and developed markers for further mapping of this region in a population derived from barley cultivars Rika and Kombar as well as did a comparative analysis of this region to other grass species. (usda.gov)
  • In this study, we mined barley EST databases and developed EST-derived markers for further mapping of this region in a population derived from Rika and Kombar. (usda.gov)
  • Fifteen newly developed markers were added to the previous map, and most were distributed within a 27.0 cM interval spanning rpt.r and rpt.k. (usda.gov)
  • As a consequence, in species inheriting large blocks that rarely recombine, even small numbers of microsatellite markers will often be more informative about inbreeding and fitness than large pedigrees. (nature.com)
  • The current cat gene map contains over 1,900 markers mapped in a feline radiation hybrid (RH) panel. (vin.com)
  • Of 3,884 polymorphic DArT markers identified in the first marker discovery experiment, over 1,000 markers detected a positive allele in each species. (cas.cz)
  • We assigned DArT markers to individuď chromosome regions of F. pratensis using a series of single chromosome substitution and recombinant lines of E pratensis in Z. multiflorum. (cas.cz)
  • Moreover, we enriched the existing genetic map of F. pratensis by over 200 DArT markers and existing genetic map of Z. multiflorum by over 500 DAIT markers. (cas.cz)
  • By analyzing specific markers on the chromosomes, we can trace our genetic lineage back to our ancestors and discover our genetic heritage. (facts.net)
  • In a study appearing early online Aug. 11 in PLOS Biology , Duke researchers have mapped the evolutionary turning point that transformed the pathogenic form of Cryptococcus from an organism of many sexes to one with only two. (phys.org)
  • Since the evolutionary forces driving genetic changes that cause infertility between species are likely also acting within species, the study of hybrid sterility also promises significant insight into mechanisms underlying infertility within species. (elifesciences.org)
  • By comparing the chromosome maps of different species, scientists can gain insights into evolutionary relationships and understand how organisms have diverged over time. (facts.net)
  • We now have a good knowledge base for investigating the colour variation over longer evolutionary time scales among other species of this damselfly genus, which occurs in Europe, Africa, Asia, Australia, North and South America. (lu.se)
  • These new genetic results help us understand both the evolutionary processes that take place within a species, and what happens over longer evolutionary macroevolutionary time scales of tens of millions of years and across several different species", concludes Erik Svensson. (lu.se)
  • To achieve our aim, we use methods from species evolution (phylogenetics) to reconstruct the evolutionary history of individual tumours, from its founder cell up to clinical presentation, over treatment periods and at relapse. (lu.se)
  • These regions of the chromosome are so dense that they were once thought to be removed from recombination. (phys.org)
  • One strategy to broaden the genetic diversity of wheat is to induce genetic exchange or recombination between wheat chromosomes and their-related chromosomes from wild relative species. (usda.gov)
  • elongatum chromosome 3E and homozygous for the ph1b mutant, to induce 3B-3E homoeologous recombination. (usda.gov)
  • The 3B-3E recombinants were genotyped by high-throughput wheat 90K single nucleotide polymorphism (SNP) arrays and their recombination breakpoints physically mapped based on the FGISH patterns and SNP results. (usda.gov)
  • The 3B-3E recombination physically partitioned chromosome 3B into 38 bins, and 429 SNPs were assigned to the distinct bins. (usda.gov)
  • In most organisms, meiotic recombination is crucial for the accurate partitioning of chromosomes. (mskcc.org)
  • The maps reveal a remarkably high degree of conservation in recombination initiation sites, despite up to 15 million years of evolution. (mskcc.org)
  • It has been shown above that crossovers between X chromosome segments inverted with respect to one another influence the orientation of the meiotic tetrads in such a way as to eliminate the single crossover chromatids, leaving a normal non-crossover one in the reduced egg nucleus. (caltech.edu)
  • At least three distinct meiotic drive alleles, one on each S. kambucha chromosome, independently contribute to hybrid infertility by causing nonrandom spore death. (elifesciences.org)
  • Dioecy has evolved numerous times in plants, but heteromorphic sex chromosomes are apparently rare. (doe.gov)
  • It is difficult to study these processes in old, already highly heteromorphic, sex chromosomes. (lu.se)
  • Although the hemp is a dioecious species, with sexual dimorphism occurring in a late stage of plant development, as a consequence of intensive improvement, many varieties with different sexual expressions were produced, and a large scale of sexualization types is observed in culture. (researchgate.net)
  • The research group Genetics of Sex Differences is interested in sexual selection and sexual conflict, the evolution of sexual dimorphism, and sex chromosome evolution. (lu.se)
  • There is now in progress in several laboratories a comparative study of the genetics of the species of Drosophila. (caltech.edu)
  • Consensus linkage groups were assigned to 21 chromosomes using SNP deletion analysis of chromosome-deficient monosomic hybrid stocks. (aber.ac.uk)
  • Here, we constructed a special wheat genotype, which was double monosomic for wheat chromosome 3B and Th. (usda.gov)
  • In this study, we developed many wheat lines carrying the genetic exchanges between a wheat chromosome and its-related chromosome from tall wheatgrass. (usda.gov)
  • The mouse Fxy2 gene is located on the distal part of the mouse X chromosome within a region syntenic to Xq22. (monash.edu)
  • When other comparative maps are loaded on top of that backbone, they will load all chromosomes that have syntenic regions that fall on the single chromosome of the backbone map, usually from more than one chromosome. (animalgenome.org)
  • Dr. Sharakhov is focused on identifying the chromosomal physical map. (biogenex.com)
  • For example, chromosome 1 of C. neoformans contained pieces of four different chromosomes from C. amylolentus , providing evidence of multiple translocations, some within the centromere. (phys.org)
  • According to their model, multiple translocations deposited the two sex determinants on the same chromosome, with a centromere in between. (phys.org)
  • 2. New linkage maps of all the chromosomes are presented. (caltech.edu)
  • In order to be able to control this process, biologists develop chestnut linkage maps. (assignmentexpert.com)
  • Initial studies with isozymes (1) indicate that pines exhibit conservation of gene order and this hypothesis will be examined further by the use of transcript based linkage maps. (le.ac.uk)
  • However, the utility of such maps is limited and there is a recognised need to produce second generation (STS based) linkage maps represented by living pedigrees. (le.ac.uk)
  • Individual BAC clones carry 100-200 kb of sequence from one individual of a target species that can be isolated by screening, mapped onto karyotypes, and sequenced. (harvard.edu)
  • The molecular karyotypes for 20 reference strains of species complexes of Leishmania were determined by contour-clamped homogeneous electric field (CHEF) electrophoresis. (fiocruz.br)
  • We performed a molecular cytogenetic investigation of the scleractinian coral Acropora solitaryensis, which is dominant in the temperate region of Japan (30-35°N). Molecular cytogenetic analysis, using fluorescence in situ hybridization (FISH), was carried out for karyotyping and gene mapping. (bioone.org)
  • Various insect species serve as valuable model systems for investigating the cellular and molecular mechanisms by which a brain controls sophisticated behaviors. (bvsalud.org)
  • In a few model bacterial species, DNA modification is known to influence chromosome replication, gene expression, and virulence. (vetscite.org)
  • Although hybrids of these two species inherit three chromosomes from each parent, the majority of spores (the yeast equivalent of sperm) that these hybrids produce fail to develop into new yeast cells. (elifesciences.org)
  • Fluorescent in situ hybridisation (FISH) on metaphase chromosomes and on extended chromatin will be used to physically locate repetitive as well as single copy DNA sequences on conifer chromosomes and to integrate physical and genetic maps. (le.ac.uk)
  • In the fall of 2011 Dr. Sharakhov's laboratory installed an Xmatrx Infinity system to physically map chromosomes of various invertebrate species using automated fluorescent in situ hybridization (FISH). (biogenex.com)
  • We had lots of physical markings of chromosomes to do," said Dr. Sharakhov whose project is now published in the Journal of Visualized Experiments (JoVE): George, P., Sharakhova, M. V., Sharakhov, I. V. High-throughput Physical Mapping of Chromosomes using Automated in situ Hybridization. (biogenex.com)
  • According to Warwick, Francis and Al-Shehbaz and Kubitzki this genus comprises four species, two of which occur in Europe. (wikipedia.org)
  • Owing to their highly plastic plant architecture and morphological similarities across the genus, barnyard grass species are very difficult to delimit on the basis of morphological criteria. (nature.com)
  • More than 530 species, mostly vines or lianas, have been described in the genus Passiflora (passion flowers) (Hansen et al. (ou.edu)
  • There are no native species in this genus in California. (ou.edu)
  • However, even if the Californian climate is, in general, not suitable for most species in this genus, more than ten different taxa are commonly cultivated in Californian gardens. (ou.edu)
  • Type species: Hatteria punctata GRAY 1842 is the type species of the genus Sphenodon GRAY 1872 (nomen emendatum et conservatumg, Opinion 455, ICZN 1957, non Sphenodon LUND 189, a genus of fossil mammal). (reptarium.cz)
  • The gene responsible for X-linked OS, FXY/MID1, is located on the short arm of the human X chromosome within Xp22.3 and encodes a protein with both an RBCC (RING finger, B-box, coiled coil) and a B30.2 domain. (monash.edu)
  • BMP15 gene encodes for a TGFβ-like growth factor of oocyte origin with a critical role in female fertility in mammals and several other species. (endocrine-abstracts.org)
  • Studies from families with multiple melanomas and atypical nevi (familial atypical multiple mole-melanoma [FAMMM] syndrome, also known a sB-K mole syndrome) have identified germline mutations of the p16 gene ( CDKN2A ) on chromosome 9p21, which encodes a negative regulator of cell growth. (medscape.com)
  • Although each stock had a distinct karyotype, in general the differences found between strains and/or species within each complex were not clear enough for parasite identification. (fiocruz.br)
  • So far, thirteen QTL with small to moderate effects have repeatedly been detected on 11 chromosomes with alleles improving FHB resistance deriving from relatives and durum wheat itself. (boku.ac.at)
  • These resources were applied to build the first complete, physically-anchored consensus map of hexaploid oat. (aber.ac.uk)
  • Here we identify causes underlying hybrid infertility of two recently diverged fission yeast species Schizosaccharomyces pombe and S. kambucha , which mate to form viable hybrid diploids that efficiently complete meiosis, but generate few viable gametes. (elifesciences.org)
  • Since these two yeast species are so closely related, the findings of Zanders et al. (elifesciences.org)
  • Ploidy-level influenced traits have been used to separate the species from related taxa in floras where diploid and hexaploids are being compared. (uwaterloo.ca)
  • Mapping Switchgrass Traits with Common Gardens The combination of field data and genetic information has allowed researchers to associate climate adaptations with switchgrass biology. (doe.gov)
  • By mapping the chromosomes of plants, scientists can identify desirable genetic traits and breed crops with improved yield, resistance to diseases, and nutritional content. (facts.net)
  • Comparison of mapped ESTs along chromosome 6H to wheat bin-mapped ESTs suggests that rpt.r and rpt.k are most likely located on the long arm of chromosome 6H. (usda.gov)
  • This review summarizes the current information on sources available for FHB resistance improvement in durum wheat which include wild and cultivated tetraploid wheat, hexaploid wheat and alien species. (boku.ac.at)
  • Physical mapping of 5S rDNA and 35S rDNA Sequences on Somatic Chromosomes of Selected Onobrychis species. (omu.edu.tr)
  • So far we have found at least fourteen different gene-sequences in wild stocks, and have found that in most geographical regions several sequences are present, though no single sequence appears to occur throughout the range of the species. (caltech.edu)
  • Characterisation and mapping of expressed sequence tags or EST's to serve as anchored sequences tagged sites (STS). (le.ac.uk)
  • Under ordinary conditions there is so little crossing over in the fourth chromosome of Drosophila melanogaster that the usual method of constructing a map is not practicable. (caltech.edu)
  • Drosophila repleta Wollaston and D. neorepketa Patterson and Wheeler are closely similar species, the former widely distributed and the latter known from Guatemala. (caltech.edu)
  • Genetic studies showed several years ago that the third chromosomes of wild strains of Drosophila pseudoobscura often carry suppressors of crossing-over. (caltech.edu)
  • In September, 1913, a wild female Drosophila of a stock from Liverpool, Nova Scotia, was crossed to a male bearing the second chromosome mutant characters vestigial and speck. (caltech.edu)
  • Physical mapping of 5S rDNA and 35S rDNA. (omu.edu.tr)
  • Evidence suggests that Ch2 was originally a mega-plasmid captured by an ancestral Vibrio species ( 2 , 5 ). (cdc.gov)
  • These highly reactive, toxic substances are known as reactive oxygen species. (medlineplus.gov)
  • As a result, phagocytes are unable to produce reactive oxygen species to kill foreign invaders and neutrophil activity is not regulated. (medlineplus.gov)
  • As a result, fewer reactive oxygen species are produced when foreign invaders trigger an immune reaction. (medlineplus.gov)
  • This lack of reactive oxygen species causes the body to overcompensate by activating more immune cells and producing more immune proteins. (medlineplus.gov)
  • Additionally, UV radiation contributes to direct DNA damage, the formation of reactive oxygen species, and the production of epidermal cytokines, growth factors, and neuropeptides. (medscape.com)
  • Because the species with male individuals and female individuals have evolved repeatedly from hermaphroditic progenitors, the mechanisms for the control of sex determination in flowering plants are extremely diverse. (researchgate.net)
  • Sex determination has been studied in multiple Salix and Populus (Salicaceae) species, and P. trichocarpa has an XY sex determination system on chromosome 19, while S. suchowensis and S. viminalis have a ZW system on chromosome 15. (doe.gov)
  • If the distance which gives one per cent of crossovers is used as an arbitrary unit of measurement, then it follows that distances on the chromosome may be calculated in terms of this unit. (caltech.edu)
  • In the new study published in Nature Ecology and Evolution, a research team mapped the extensive and striking colour variation among the females of the bluetail damselfly (Ischnura elegans). (lu.se)
  • Scientists have been studying the evolution of sex chromosomes for more than a century. (phys.org)
  • Mapping these chromosomes has allowed scientists to unlock numerous mysteries and gain valuable insights into various biological processes. (facts.net)
  • Forensic scientists use chromosome mapping techniques to analyze DNA evidence and match it to potential suspects, helping solve crimes. (facts.net)
  • By analyzing an individual's chromosome map, scientists can provide personalized dietary recommendations based on genetic factors that affect nutrient metabolism. (facts.net)
  • Meiosis is a cell division that generates sperm and egg and results in a halving of the number of chromosomes. (mskcc.org)
  • Here we comment on the four naturalized/casual Passiflora species in California, describe the new and largest infestation of P. tarminiana , and provide a key for identification of discussed taxa. (ou.edu)
  • Both chromosomes are controlled coordinately in their replication and segregation ( 4 ). (cdc.gov)
  • These changes have been studied and characterized through the use of many tools and experimental approaches but perhaps most effectively through applications for bacterial artificial chromosome (BAC) libraries. (harvard.edu)
  • The small chromosome, made up of the left end of X attached to the spindle-fibre region of 4, may be obtained in individuals (of either sex) that are otherwise normal diploids. (caltech.edu)
  • Conifers are diploids which exhibit conservation of chromosome number (2n=2x=24). (le.ac.uk)
  • Integrative analysis of FGISH and SNP results led to the construction of a composite bin map for chromosome 3B. (usda.gov)
  • Here, using the dRNA-seq technique in combination with ANNOgesic analysis, we successfully mapped and annotated transcription start sites (TSS) of both E. faecalis V583 and E. faecium AUS0004 at single nucleotide resolution. (frontiersin.org)
  • This comprehensive global TSS mapping atlas provides a valuable resource for RNA biology and gene expression analysis in the Enterococci. (frontiersin.org)
  • Additionally, we did a comparative analysis of this region to other grass species. (usda.gov)
  • Since the last-mentioned point involves a new type of effect of the Y-chromosome, it seems desirable to record it, even though the analysis is still unfinished. (caltech.edu)
  • Argyrochosma microphylla is probably the most distinctive species of Argyrochosma in the flora. (efloras.org)
  • If such deductions are to be of value, it is desirable that there be available a satisfactory arrangement of the species into some scheme of classification that can be taken as indicating their degree of genetic relationship. (caltech.edu)
  • In this article, we will explore 20 enigmatic facts about chromosome mapping that showcase its importance in the world of biology . (facts.net)
  • Consequently, species names are often used indiscriminately without standard identification criteria, leading to confusion in global species distribution patterns and impeding local precision weed control. (nature.com)
  • Prokaryotes typically have a single circular chromosome. (cdc.gov)
  • For the backbone map, you must specify a single chromosome to be loaded at a time. (animalgenome.org)
  • That is, when you swap backbones, you can choose a single chromosome from an off-backbone map to become the new backbone. (animalgenome.org)
  • Even though VCMap only loads a single chromosome at a time, in most cases, it is still impossible to display all of the available features for that chromosome at once. (animalgenome.org)
  • 2010) recommended to treat all tuataras as a single species, i.e. synonymize guntheri with punctatus. (reptarium.cz)
  • Regardless of the name or species, Heitman contends that some universal principles could govern the evolution of all sex chromosomes. (phys.org)
  • Here, we review studies of sex chromosome evolution in amniotes and the ways in which the field of research has been affected by the advent of BAC libraries. (harvard.edu)
  • From understanding the role of chromosomes in inheritance to unraveling the secrets of human evolution, chromosome mapping has revolutionized our comprehension of the genetic landscape. (facts.net)
  • Sexual antagonism is also thought to be a key factor in the evolution of sex chromosomes. (lu.se)
  • We make genetic and functional maps of cancer cell evolution in patients by analysing multiple tumour samples from the same patient. (lu.se)
  • With these techniques, researchers have identified differences and similarities in sex chromosome content and organization across amniotes and have addressed hypotheses regarding the frequency and direction of past changes. (harvard.edu)
  • Also, due to Xmatrx's ease of use, high-throughput capabilities and proven success, Dr. Sharakhov noted that there were several colleagues who were inquiring with him about collaborations involving high-throughput screening of samples or other projects related to the physical mapping of chromosomes. (biogenex.com)
  • The genetic basis of FHB resistance of a few tetraploid sources in the T. durum background has been dissected by QTL mapping. (boku.ac.at)
  • Chromosome mapping has illuminated the genetic basis of various inherited diseases, allowing for better diagnosis and management. (facts.net)
  • Both species carry significant biological differences in their behavioral adaptation and immunity, but the genetic basis of these variations are still poorly understood. (bvsalud.org)