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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 56 for “"DNA markers"”.
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Development and characterization of DNA markers for two avian species
… of genomics to animal agriculture are DNA markers, especially microsatellites and single nucleotide polymorphisms. These markers are the resources necessary for constructing genetic maps and for determining how improved and unimproved animal breeds are related. Here, DNA markers were …
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Hypervariable DNA markers and population structure in three fish species
The utility of hypervariable DNA polymorphisms as a general population genetics method was studied in three fish species by the use of multilocus DNA fingerprinting. Laboratory lines and field caught specimens from Belize and Florida of the clonal species <i>Rivulus marmoratus</i> were examined to …
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Analysis of populations within the UAE using tandem repeat DNA markers
This research has been carried out to study the UAE population structure, particularly as the UAE has an unusual population composition. Transient workers from Indian sub-continental outnumber the native Arabic population by approximately three (60%) to one (20%). Other Arab populations make up …
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Linking germination traits of oilseed rape (<i>Brassica napus</i> L.) to DNA markers
… in order of decreasing heterogeneity.<br/><br/>DNA analysis was made on leaf tissue of early, middle and late germinating phenotypes using two simple sequence repeat primers. There was heterogeneity and phenotypic variability generally, but a direct association between phenotype and genotype was …
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Characterisation of the population genetics of farm-bred Haliotis midae using microsatellite DNA markers
… in order to determine whether microsatellite DNA analysis could be used to separate farmed abalone into phenotypically different groups with respect to growth rate. Microsatellites display high levels of variability and this makes them suitable for a wide variety of applications in …
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Nuclear and cytoplasmic genetic variation in Picea: DNA markers for evaluating past migration, introgression and evolutionary history
… northwestern refugium.</p><p>Some individual markers within cytoplasmic and nuclear genomes are species-specific. Some of these single nucleotide polymorphisms are appropriate to identify spruce macrofossils recovered from eastern North American lake cores. Since white, black and red spruce …
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Development of genetic mapping and DNA markers for tolerance to bacterial stem blight caused by Pseudomonas syringae pv. syringae in alfalfa
… phenotypes. This is the first study to identify DNA markers associated with tolerance to this pathogen, to increase understanding of defense mechanisms, and advance progress in the development of improved alfalfa cultivars. These results will provide a better insight into the genes involved in …
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Development of DNA markers and the genetic analysis of seven populations of the freshwater mussel Lampsilis radiata siliquoidea (Bivalvia: Unionidae) in north central Minnesota
… central Minnesota. Random amplified polymorphic DNA (RAPD), heteroduplex, and single-stranded conformational polymorphism (SSCP) analyses were performed using nuclear DNA markers. We assayed the populations for variation using a single repetitive 18 base pair RAPD primer and two loci that flanked …
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Using DNA markers to trace pedigrees and population substructure and identify associations between major histocompatibility regions and disease resistance in rainbow trout (Oncorhynchus mykiss)
… of genotyping errors. Data from four of the 12 markers were excluded from parental analysis based on these criteria. Parental assignments were compared to those of a previous study that used five independently amplified microsatellites. Percentages of progeny assigned to parents were higher …
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Genetic and Molecular Analysis of the Rj(7) Gene in Soybean Using Pcr-Based Technologies
… mutant gene independent of rj 7 and to identify DNA molecular markers associated with rj 7. Genetic study of NOD3-7 revealed that a single recessive mutant gene was responsible for hypernodulating mutation in this line. Using hypernodulating pure lines exhibiting purple colored hypocotyl as a …
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Empirical Evaluation of Marker -Assisted Selection for Improving Quantitative Traits in Sweet Corn
… from this study suggest that incorporating DNA markers to traditional breeding programs can expedite selection progress and reduce costs. Also, data suggests that beneficial QTL identified in one population can exert similar effects in other genetic backgrounds.
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Characterization of Resistance to Gray Leaf Spot [Pyricularia Grisea (Cooke) Sacc.] in Perennial Ryegrass and Tall Fescue
… analysis (BSA) with random amplified polymorphic DNA (RAPD) markers to identify DNA markers associated with resistance to gray leaf spot. Although polymorphic bands were identified between the resistant and susceptible bulks, these markers were not confirmed on the entire population to be …
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Genetic diversity in Neospora caninum
… approaches such as sequencing of ribosomal DNA. Mini- and microsatellite DNA markers have recently been reported to represent a valuable tool to study genetic diversity within this parasite. This is the topic of this thesis. In the present study, mini- and microsatellite DNA markers were …
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Linkage studies of x-linked cleft palate and ankyloglossia in a British Columbia native kindred
… in the B.C. kindred which were initiated with DNA markers from the Xq21-q22 region and were later expanded to include markers from the Xq13 region. No recombination was observed between CPX and the DNA markers DXS447 (peak lod score [Zmax ] = 9.38), DXS72 (Zmax = 7.74; Gorski et al. 1992) and …
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Characterization and Molecular Analysis of University of Arkansas Peach, Prunus persica (L.) Batsch, Flesh Types and Development of a Post-Harvest Evaluation Protocol for Arkansas Peach and Nectarine Genotypes
… validation of endopolygalacturonase (endoPG) DNA markers, and investigation of endoPG marker allele combinations associated with the slow-melting-flesh (SMF) trait were done.</p> <p>Fruit from 30 individuals were harvested at minimum- and well-mature states. After conditioning for 24 h at 20 …
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Phylogeny and phylogeography of the Chacma Baboon (Papio ursinus): the role of landscape in shaping contemporary genetic structure in the southern African baboon
… molecular sequences from two mitochondrial DNA markers: the Brown region and the hypervariable D-loop. DNA was extracted from faecal samples of 261 free living chacma baboons across southern Africa. Phylogenetic and phylogeographic techniques, including coalescent modeling, were used to …
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Molecular systematics and population genetics of Hypoxylon truncatum sensu Miller using RAPD
… investigated, using random amplified polymorphic DNA markers (RAPD). A simple, rapid method was developed to isolate DNA from fungal tissue. This method described involves treating ground mycelium with a lysis buffer containing SDS, followed by precipitation of contaminants using CsCl. Using DNA …
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Genomic dissection of structural variations and evolution forces of the sex chromosomes in spinach (spinacia oleracea)
… with sex determination in spinach, I developed DNA markers to test 40 spinach accession from different countries. I found that a small 1.78 Mb region is featured by strong linkage with sex type and it is conserved across 40 different spinach accessions by genotyping plants with 12 DNA markers. …
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Genetic Association Mapping : Missing Markers, Epistatic Effects, and Applications
… has been widely used to detect desirable genetic markers associated with traits of interest for plant improvement. Missing marker data are a common and yet challenging issue in many association mapping studies, especially as the number of markers used for these studies is large. On the other hand, …
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