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 11 of 11 for “"neutral theory"”.
-
Navigating Molecular Evolution Using Substitution Mappings
… radicality to test the predictions of the nearly neutral theory. I find that mappings perform poorly for coevolution detection, but using mappings to find the radicality of an average amino acid by scoring each observed substitution works well. Overall, substitution mappings look to be a …
-
Evolution of the Proteasome
… or regulatory elements of duplicated genes. The neutral theory is not supported by these results because unprocessed proteasome pseudogenes are not found. Finally, scoring tables calculated from numerical indices of amino acid properties were used to quantify the evolution of amino acid …
-
The basis of racial classification: Ancestry-informative marker versus social context
… focused on social factors. In the 1960s, the neutral theory of molecular evolution emerged, supporting a neutral environmental adaptation approach. By the end of the 20th century, sociobiology arose as a new discourse of bio-behavioral predisposition based on molecular findings. In the 21st …
-
Functional Sorting of Evolutionary Effects in Protein Domains
… under positive selection, negative selection or neutral evolution. Although there are numerous existed methods and statistical tests to detect the action of positive selection, almost all of them heavily rely on the availability of enough within-species polymorphism data and between-species …
-
Understanding the microbiota in drinking water distribution networks – from municipal to indoor water supply systems
"A drinking water distribution system can be viewed as an ecosystem that is comprised of diverse microorganisms interacting with each other and the environment. These microorganisms are central to water quality integrity during distribution. This study investigated the diversity, structure, and …
-
The use of microsatellites as a surrogate for quantitative trait variation in conservation
… is made that microsatellites, which are neutral markers, behave in the same manner as quantitative traits. If this assumption were proved incorrect, then the use of neutral markers in conservation monitoring would have to be re-evaluated. In this study, experiments have been conducted …
-
On the Distribution of Genetic Variation in Ecological Communities
… approach that involves merging Hubbell's neutral theory with neutral population genetic theory to construct a joint model of species abundance and genetic diversity. This model simulates joint distributions of abundance and genetic variation assuming both ecological and iv population …
-
The Effects of Dispersal on Macroecological Patterns
<p>Ecologists have long sought to uncover the mechanisms behind large-scale, macroecological patterns in the distribution and abundance of species. Macroecological patterns are often attributed to the dynamics of dispersal (e.g. dispersal limitation or widespread dispersal). However, few studies …
-
Phase transitions in fluids and biological systems
… ecosystem, particularly the transition between neutral (random) and niche (deterministic) assembly. I apply this metric to 16S rRNA metagenomic studies of 6 vertebrate gastrointestinal microbiomes and find that they assembled through a highly non-neutral process. I then consider a phase …
-
Causes and consequences of genetic diversity in pinnipeds
… discusses its limitation with respect to the neutral theory of molecular evolution and the complexities of assigning function to chemical compounds and microbes in wild organisms and outlines future directions. To summarise, my dissertation provides novel insights into how recent and …
-
Parasites in freshwater mussels: community ecology and conservation
Parasites can be studied with respect to their spatial distribution, abundance and diversity (a parasite-centric view), or with respect to their effects on host individuals, populations, communities and the wider ecosystem (a host-centric view). The former contributes to understandings of what …