Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 21 for “"Haplotype diversity"”.
-
Computational Methods for Haplotype-aware De Novo Genome Assembly from Long Reads
Genomes of the same species usually show high diversity due to genetic variations. Most eukaryotes involve multiple copies of genomes, each of which is inherited from one of the ancestors. Whereas prokaryotes, such as virus and bacteria, are prone to form a collection of closely related strains …
-
Ecotoxicological and genetic effects of a mixture of heavy metals on selected aquatic macroinvertebrates
… conformation polymorphism analysis to determine haplotype. Haplotype diversity was generally lower immediately following spring runoff than in late summer, and generally lowest at the most contaminated site. Haplotype diversity was significantly correlated with concentrations of zinc in water, …
-
An HMM-based boundary-flexible model of human haplotype variation
… of a meaningful and detailed description of haplotype variation holds the promise for more powerful genetic association studies. The segmentation of the human genome into blocks of limited haplotype diversity has been successfully employed by models that describe common variation. Some …
-
Mating Habits, Dispersal and Postglacial Range Expansion of Nigronia Serricornis (Say) (Megaloptera: Corydalidae)
… performed to determine the patterns of genetic diversity and the effects of post-glacial range expansion (PGRE). Haplotype diversity was significantly negatively correlated with latitude (R2 = 0.475, p = 0.002), as seen in other species experiencing PGRE in eastern North America. The 68 unique …
-
The potential impact of climate change on the genetic diversity of the endangered western leopard toad, Sclerophrys pantherina
… of the greatest threats to the persistence of biodiversity. Much work has focused on the potential for climatic shifts to alter species' ranges, phenology, physiology, and behaviour, addressing higher level units of biodiversity from populations to biomes. However, the potential effects of climate …
-
Seasonal rainfall regime modulates genetic variation in the moss Pseudocrossidium crinitum
… often been invoked to explain the amazingly high diversity of the Cape Floristic Region. An analysis of cpDNA and nDNA sequence variation for 65 populations of the moss Pseudocrossidium crinitum across South Africa revealed the presence of a phylogeographic break corresponding to the split between …
-
Intraspecific variation and ecology of a highly restricted paleoendemic (Witsenia maura) in the south-western Cape
… of its variation revealed exceptional haplotype diversity. This diversity can best be explained by swamps acting as refugia during interglacial periods.
-
Investigation into X-STR haplotype frequencies for forensic human identification in South Africa
… using StatsX and Arlequin. Herein, allele and haplotype frequencies and forensic parameters for the South African population are reported, as well as data related to the reproducibility, sensitivity, limit of detection, and concordance of the Investigator Argus X-12 QS kit. DXS10135 was the …
-
Genome Analysis of the Ashanti Dwarf pig of Ghana
… 60K SNP BeadChip assay. Also, the genetic diversity, linkage disequilibrium and signatures in the Ashanti Dwarf pigs were further compared with data derived from pig populations worldwide including pig populations from Africa (Busia-Kenya), European (Large Whites and Landraces) and Chinese …
-
Conservation and population genetics of African and Asian rhinoceros
… development of genetic markers for assessment of diversity at neutral and adaptive loci can be used to address a number of questions that will aid in the conservation of rhinoceros populations both ex situ and in the wild. In order to evaluate genetic diversity in rhinoceros populations, I …
-
Resolving the 150 year debate over the ecological history of the common periwinkle snail, Littorina littorea, in northeast North America
… a significant reduction in overall genetic diversity in North America versus Europe, nested and common haplotype frequencies in North America, and a divergence estimate of no greater than 450 years ago.</p><p>Third, I explored genetic founder effect signatures in L. littorea's most common …
-
Population structure of Atlantic herring, Clupea harengus L., in the northeast Atlantic using phenotypic and molecular approaches
… herring. The results also showed a high level of haplotype diversity at the ND genes which contrasts with low levels of genetic divergence. This is apparently due mainly to the high number of unique haplotypes, and low number of common haplotypes detected, which reduced the power of the …
-
Testing new genetic and genomic approaches for trait mapping and prediction in wheat (Triticum aestivum) and rice (Oryza spp)
… using a less dense physical map derived from diversity arrays technology (DArT) markers. GBS detected more QTLs than DArT markers although some of the QTLs were detected by DArT markers alone. Prediction accuracies from the two marker platforms were mostly similar and largely dependent on …
-
An African Genome Variation Database and its applications in human diversity and health
… exhibit the highest levels of sequence and haplotype diversity of all extant human populations. A combination of historical as well as geographical factors have contributed toward the high level of genetic diversity in Ancestral populations in Africa. Additionally, a series of concomitant …
-
Development, Validation and Applications of a Novel Multiplex Assay RM-Yplex Amplifying 13 Rapidly Mutating Y Chromosome Short Tandem Repeat Regions
… included in the ladder were sequenced. Reference haplotypes were developed for the 5 male samples included in the Y chromosome Standard Reference Material 2395 (SRM2395) using RM-Yplex. The International Society of Forensic Genetics (ISFG) recommendations were followed for adopting allele …
-
Systematics and Ecology of Truffles (Tuber)
… within the Tuber phylogeny to assess species diversity, long-distance dispersal, and host associations. In total, 120 phylotypes were detected (based on a 96% similarity criterion). Tuber shows high levels of continental endemism. I hypothesize that species shared between continents and having …
-
An investigation into the decline of the bearded vulture : Gypaetus barbatus in southern Africa
… into the local population. The reduced haplotype diversity found in southern Africa suggests that translocations may be necessary to improve genetic diversity. Lastly I used population viability analysis models to determine the future population trend and identify the primary demographic …
-
Population genetics of the koala (Phascolarctos cinereus)
… translocation of koalas with low genetic diversity. Koalas are currently threatened by loss of habitat and urbanization due to increasing growth of the human population. The goals of this study were: 1) to assess genetic diversity of the koala and 2) to determine the genetic structure of …
-
Population genetics of the cichlid, Cynotilapia afra (Günther 1894), in its native and introduced ranges in Lake Malawi
… species share the same or very similar mtDNA haplotypes. Furthermore, the introduced populations showed a higher sequence and haplotype diversity than their native counterparts. This analysis suggests that elevated gene diversity was largely due to C. afra populations being founded by …
Page 1 of 2