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 46 for “"Phylogenetic Reconstruction"”.
-
Phylogenetic Reconstruction With Gene Order and Content Information
<p>Phylogenetic reconstruction is the attempt to determine the evolutionary relationships which connect species by comparing their genetic information. In recent decades research has opened a new frontier in this field, referred to as gene order and content data. This information format uses the …
-
Species-level phylogenetic reconstruction of the African cycad genus Encephalartos (Zamiaceae)
This thesis explores species-level phylogenetic relationships of the African cycad genus Encephalartos, which is one of the eleven genera of cycads. The genus is confined to Africa and comprises approximately 65 species, 38 of which are found naturally in South Africa. The phylogenetic studies on …
-
The Phylogenetic Reconstruction of the Grass Family (Poaceae) Using matK Gene Sequences
… of the chloroplast trnK gene, was evaluated for phylogenetic utility above the family level and within the grass family (Poaceae). There are three major objectives in the research. The first one is to study the utility of the matK gene in plant evolution. The second objective is to characterize …
-
Investigating the larval/juvenile notothenioid fish species assemblage in Mcmurdo Sound, Antarctica using phylogenetic reconstruction
… and used mitochondrial ND2 gene sequencing with phylogenetic reconstruction to make definitive species identifications. We then surveyed the current literature to determine the adult notothenioid communities of McMurdo Sound, Terra Nova Bay, and the Ross Sea, and subsequently compared them to the …
-
Topography as a determinant of range extent and overlap : a species level phylogenetic reconstruction and geographical range analysis of Syncarpha (Asteraceae)
… and nuclear genes provided the robust, dated phylogenetic hypothesis required to assess the monophyly of the genus, as well as reconstruct the signal of geographic speciation within the lineage. The phylogeny recovered Syncarpha as polyphyletic, comprising two clades with good support, placing …
-
Identification and functional characterization of the mitochondrial adenine nucleotide carriers of Trypanosoma brucei
… entries were analyzed by sequence analyses and phylogenetic reconstruction. AACs phylogenetic reconstruction proved a strong association with yeast, funghi and plant clades, whilst separates from those AACs and from metazoans. MCP13 groups with GGCs, seems to be present only on lower eukaryotes …
-
A phylogenetic study of the Cynipoidea (hymenoptera)
… provided particularly strong support for the phylogenetic reconstruction. Concepts of host defence, host range, gall complexity, gall position, host switching, reproductive cycles, biogeographical distribution, plate tectonics, palaeobotany, palaeoclimatology, the origin of hyperparasitism and …
-
Assessing the information content of fossilizable data, with a focus on the Asian origin and diversification of Glires (Mammalia)
… of fossil Glires (rodents + rabbits) effects phylogenetic reconstruction and the implications for downstream analysis and interpretation. The first two chapters take a detailed look at the phylogenetic signal contained within fossil Glires, while the third and fourth chapters put …
-
Investigations of the Accuracy of Partial Genome Sequencing and Restriction Fragment Analysis in Determination of Genetic Relationships: A Computer Simulation Study
… of genetic relationships, as represented in phylogenetic trees. Three partial genome DNA sequences with different lengths (200, 600, 1000 bps) and three analytic algorithms for restriction fragment data (the Dice coefficient, the Nei and Li distance, and the Weigel and Scherba distance) were …
-
Identification of reassortant influenza viruses at scale : algorithm and applications
… of isolates at a time, because they rely on phylogenetic reconstruction, a computationally expensive method. This thus hampers our ability to test systematically whether reassortment is associated with host switching events. In this thesis, I use phylogenetic heuristics to develop a new …
-
Chloroplast DNA phylogenetics of the North American chestnuts and chinquapins (Castanea Mill., Fagaceae)
… as the causes of haplotype sharing makes phylogenetic reconstruction of the North American Castanea species difficult. Although non-D haplotypes were previously reported as diagnostic for C. pumila and hybrids, multiple non-D haplotype C. dentata were documented in the Southern …
-
Domain-based approaches to understanding phylogeny and orthology
Domain-based approaches are used in phylogenetic reconstruction and functional identification. Two groups of ionotropic glutamate receptors (iGluR’s) were identified with the topology of the binding core and pore-loop of the eukaryotic iGluR’s. Group 1 has a potassium-like selectivity filter and …
-
No hea te kiore : MtDNA variation in Rattus exulans : a model for human colonisation and contact in prehistoric Polynesia
Phylogenetic reconstruction, originally developed for biological systematics, is a tool which is increasingly being used for anthropological studies addressing the problems of population origins and settlement patterns. Given the nature of the phylogenetic model, it is expected that phylogenetic …
-
Probabilistic framework for genome-wide phylogeny and ortholog determination
… complete genomes. This thesis presents a new phylogenetic reconstruction method, SINDIR, that is designed specifically for genome-wide orthology determination. Unlike any other method, SINDIR exploits the known evolutionary history of a set of species to infer the history of their genes. This …
-
The Prolamins of Pearl Millet
… sequence homology and maize antibody binding. Phylogenetic reconstruction suggests that P. glaucum may have branched from maize prior to the gene duplication which created the 19kD and 22kD α-zein families.</p>
-
Evolution of the aquatic beetle family Noteridae (Coleoptera: Adephaga): integrating methods to examine patterns of diversification across temporal scales.
… years old. Adephaga has been the subject of many phylogenetic investigations using a variety of data types, without strong consensus on the relationships of its aquatic members. We conducted the first phylogenomic study of Adephaga with ultraconserved elements (UCEs). UCEs are captured by …
-
Integrating Multiple Data Views for Improved Malware Analysis
… to malware: classification, clustering, and phylogenetic reconstruction. The important component of my methods is that they all take into account multiple views of malware. Typically, analysis has been performed in either the static domain (e.g. the byte information of the executable) or the …
-
Morphology, Molecular Phylogeny and Genome content of Bothriochloa focusing on Australian taxa
… rps16 intron and 3'trnK) of chloroplast genome phylogenetic were used in phylogenetic reconstruction, and chromosome counting as well as flow cytometry for chromosome number and genome size were conducted during the study. Phylogenetic trees were constructed using MP with NJ for morphological …
-
A new method for identifying site-specific evolutionary rates and its applications.
… sites identified by TIGER was shown to improve phylogenetic reconstruction of deeply diverging lineages and of taxa displaying compositional attraction. Additionally, TIGER was applied to a gene content matrix in order to identify HGT signals and integrated into the analysis of a current …
-
Efficient algorithms for phylogenetic post-analysis
… variety of tasks are typically performed after a phylogenetic reconstruction proper -- tasks which fall under the category phylogenetic post-analysis. In this dissertation, we present novel approaches and efficient algorithms for three post-analysis tasks: taking distances between (typically, all …
Page 1 of 3