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 9 of 9 for “"ancestral state reconstruction"”.
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Phylogenetics and biogeography of Australian subterranean Parabathynellidae.
… phylogenetic framework, in combination with an ancestral state reconstruction analysis, was used to explore the evolution of two key morphological characters previously used to define genera, and assess the oligomerization principle (i.e. serial appendage reduction over time), which is commonly …
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Ancestral Genome Reconstruction in Bacteria
… genomes has provided a golden opportunity for ancestral state reconstruction studies, especially in the whole genome reconstruction area. However, most ancestral genome reconstruction methods developed so far only focus on gene or replicon sequences instead of whole genomes. They rely largely …
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Evolution of Floral Morphology and Symmetry in the Miconieae (Melastomataceae)
… photographs. I analyzed trait evolution with ancestral state reconstruction of discrete and continuous characters with R packages <em>ape</em> and <em>phytools</em>. Trait correlation was estimated with Pagel’s statistical method for discrete characters and with regression analysis of …
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Molecular Systematics of <i>Isoëtes</i> (Isoëtaceae) in Eastern North America
… inference were fully resolved with high support. Ancestral state reconstruction of megaspore and microspore ornamentation, megaspore color, and seasonality of spore maturation found that more than 80% of these character state transitions occurred on terminal tips of the tree, and that some shared …
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Comparative Morphology and Macroevolution of the Avian Quadrate
… array of key ecological categories and perform ancestral shape reconstructions in the context of an up‐to‐date galloanseran phylogeny as a case study. We found non-ecological factors, such as allometry and phylogeny, exhibit stronger relationships with quadrate shape than ecological factors do. …
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Evolution of Male Gametes in Liverworts
… as outgroups. Mesquite was used to perform an ancestral state reconstruction using maximum likelihood with Mk1and AsymmMk parameter models. Haplomitriopsida taxa (Haplomitrium and Treubia) shared several characters including more than one plastid, more than two mitochondria, wide spline width, …
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Magnitude, concentration, and metric complexity in phylogenetics and information theory
… to information theory, via the problem of ancestral state reconstruction. The existence of consistent estimators of the root state for discrete models is known to be equivalent to a density assumption near the root, called the Big Bang condition [12]. In the continuous case, the consistency …
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Systematics of the Relhaniinae (Asteraceae-Gnaphalieae) in southern Africa : geography and evolution in an endemic Cape plant lineage
… earliest-diverging lineages in the Gnaphalieae. Ancestral areas are reconstructed onto the tree using maximum likelihood and indicate a Cape origin and diversification for the Gnaphalieae, with subsequent, multiple dispersals out of southern Africa. A relaxed Bayesian clock is used to estimate …
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New hypotheses about the origin of Pseudomonas syringae crop pathogens
… evolved after the advent of agriculture from ancestral P. syringae strains with wide host range that were adapted to mixed plant communities. The model tomato and Arabidopsis pathogen P. syringae pv. tomato (Pto) DC3000 and its close relatives isolated from crop plants were thus selected to …