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.
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Showing 1 to 20 of 20 for “"Molecular Sequence Data"”.
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Mollecular Phylogeny of tribolium (Danthoniodeae: Poaceae) and its taxonomic implications
Molecular sequence data from two noncoding regions of D A (ITS AND TRNL-F) Were used to produce a phylogeny for the genus Tribolium and its African and Australasian allies. Topological comparisons of the combined molecular data with the appended existing morphological tree were made. A significant …
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Molecular phylogeny of Tribolium (Danthonioideae: Poaceae) and its taxonomic implications
Molecular sequence data from two noncoding regions of DNA (ITS AND TRNL-F) were used to produce a phylogeny for the genus Tribolium and its African and Australasian allies. Topological comparisons of the combined molecular data with the appended existing morphological tree were made. A significant …
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Algorithms for phylogenetic tree correction in species and cancer evolution
… trees, also known as phylogenies, from molecular sequence data is a fundamental problem in computational biology. Classically, evolutionary trees have been estimated over a set of species, where leaves correspond to extant species and internal nodes correspond to ancestral species. This …
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Phylogeny of the Scarabaeini (Coleptera: Scarabaeidae)
… polarized against 4 members from related tribes. Molecular sequence data from mitochondrial Cytochrome Oxidase subunit I (1197 bp) and 16S ribosomal RNA (461bp) genes of 25 of these taxa were also obtained in an attempt to further resolve broad phylogenetic relationships inferred from …
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A Phylogenetic Analysis of Species Relationships in Hemlocks, the Genus <em>Tsuga</em> (Pinaceae).
… analysis based on structural, biochemical, and molecular sequence data. Characters obtained from published and unpublished literature were combined with new morphological characters from seeds, seedlings, and leaf cuticle material. Results from parsimony analyses of these characters differed …
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A Molecular Phylogenetic Assessment of the North American Lichen Tiger Moths (Lepidoptera; Erebidae; Arctiinae; Lithosiini) with Life History Observations and a Description of a New Species from Central Arizona
… phylogeny of North American lithosiines using molecular sequence data from three genes that have been show to phylogenetically informative in Lepidoptera: cytochrome oxidase subunit I (COI), ribosomal protein S5 (RPS5) and the large subunit 28S ribosomal DNA (28S). Results provide new insights …
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Phylogenetic Study of Apocynaceae Juss. And Aspidosperma Mart. And Zucc
… of this taxonomic group used morphological and molecular characters. The morphological data was similar to that used for PCA, and the molecular sequence data was from both the nuclear genome (ITS-1 and ITS-2) and the chloroplast genome (trnL intron and trnL-F spacer). Phylogenies derived …
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The Lecanicephalidean Fauna of the Stingray Genus Pastinachus (Myliobatiformes: Dasyatidae)
… of Pastinachus examined using morphological data augmented by molecular sequence data generated as part of a separate study. Most species identified are likely new to science. Four new species of Flapocephalus and three new species of Anteropora are formally described. Flapocephalus trygonis, …
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Molecular Phylogenetics and Historical Biogeography of the Tribe Chiococceae (Rubiaceae)
… and biogeography of the Chiococceae using molecular DNA sequence data, and presents novel data on the tribal and generic delimitations, intergeneric relationships, and the origin and dispersal of this group.</p> <p>In the most recent tribal delimitations within subfamily Cinchonoideae, …
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Phylogenetics and biogeography of Australian subterranean Parabathynellidae.
… framework. This thesis provides a comprehensive molecular systematics framework for Australian Parabathynellidae, which is used to explore phylogenetic relationships amongst parabathynellids, their diversity, some aspects of character evolution and their biogeographic history within Australia. In …
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Convergent evolution of betalains in Caryophyllales
… I then discuss convergence at the level of molecular sequence data, and explore ideas of convergence at multiple hierarchies and their integration in the evolution of complex traits. Second, I conduct a reanalysis of the evolution of betalains, using the latest phylogenomic hypothesis of …
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Chemical Footprinting of Polymeric Structure of hnRNPA2 Low Complexity Domain
… or low complexity domains. These low complexity sequences have been shown to induce phase transition in low salt buffer. When incubated at high concentration, certain of these low complexity domains polymerize into labile, amyloid-like fibers. I developed a chemical footprinting method to probe …
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Biogeography and phylogenetics of grassland auchenorrhyncha
… planthoppers (Caliscelinae) and compared these data to biogeographic patterns observed in other grassland restricted lineages. In order to correctly infer biogeographic patterns, accurate phylogenies of each lineage are required. Using molecular sequence data from multiple genes, I inferred …
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THE ROLE OF COMPLEX EVOLUTIONARY DYNAMICS IN MOLECULAR SEQUENCE ANALYSIS
… can be used to quantify selective pressure on molecular sequences. The work contained within this dissertation represents my efforts to create, validate, and test codon models, and to apply them to biologically diverse data sets. Specifically, my objective is to determine the impact and …
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Infections of the Norway lobster, Nephrops norvegicus (L.) by dinoflagellate and ciliate parasites
… the Uk was examined. PCR was used to amplify and sequence the 3' of the small sub-unit (SSU) and the first internal transcribed spacer (ITS1) of the parasite rDNA complex. Analysis of the SSU and ITS 1 sequences revealed that both the regions are highly conserved (92.2%) or greater) between …
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Identification of the Polar Flagellum Genes in Azospirillum brasilense
<p><em>Azospirillum brasilenser,</em> a nitrogen fixing rhizobacterium, can colonize plant roots and increase the yield of economically important cereals, such as rice and grasses. This organism has a mixed pattern of flagellation: a single polar flagellum for motility in liquid medium and lateral …
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Isolation of the Cytosolic C-Terminus Segment of Mammalian Kca Channel a Subunit
… of this affinity column approach and the sequence of this protein. If proven to be the ‘tail’ of the BK<sub>ca</sub> channel, purification of this protein will open doors for subsequent biological experiments to determine how different ligands such as diatomic gases may interact with the …
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Structural Dynamics and Signaling Roles of the Aer PAS and F1 Regions
… residue at the membrane interface. From these data, as well as <em>ab initio </em>and homology models of the PAS, N-terminal region of the F1 (both based on MmoS) and the HAMP domain (based on Af1503), we constructed a working model of the Aer trimer of dimers. Based on this model, the PAS …
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Chlorinated Tyrosine Species as Markers of Inflammation: A Kinetic Study
… secondary structure and is a first-order, intramolecular reaction. These studies further support the role of chloramines in the chlorination of protein-bound tyrosine and, to our knowledge, are the first to provide rate constants.</p>
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Molecular Characterization and Inhibition of Antibodies Elicited Against Galactosyltransferase Knockout Pig Xenografts
… dissertation is twofold: 1) to provide further molecular characterization of the elicited antibodies which mediate rejection of porcine xenografts, and 2) to identify clinically applicable small molecules capable of selectively inhibiting these antibodies. We have found that vascular pig …