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 50 for “"Ancient DNA"”.
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Ancient DNA from pre-Columbian South America
Ancient DNA (aDNA) research in the Americas represents a genetic strategy to investigate demographic and historical events of populations in the continent with the added bonus of having a direct and temporal perspective. This thesis aims to explore human mitochondrial DNA (mtDNA) diversity from a …
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Entwicklung neuer Markersysteme für die ancient DNA Analyse
… Populationen abgeleitet werden können. Die ancient DNA-Analytik bietet Zugang zu solchen biologischen Daten über die klassischen morphologischen Methoden hinaus. Zur Erweiterung der bislang verfügbaren Möglichkeiten der molekulargenetischen Untersuchung von Skelettfunden wurden im Rahmen der …
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Investigation and application of methods for ancient DNA research
… in 2005 caused a revolution in the field of ancient DNA (aDNA). Using the large sequencing capacity of HTS, researchers have overcome the abundant environmental contamination present in most aDNA extractions to reconstruct the genomes of long extinct organisms, such as an archaic horse that …
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Investigating drivers of cyanobacterial blooms in Aotearoa – New Zealand lakes using sedimentary ancient DNA
… pigments) and modern proxies (sedimentary ancient DNA, XRF scanning) from lake sediment cores to reconstruct lake ecology in pre-human times, after M¯aori settlement between the 13th to 15th century, and after European settlement from 1840 AD. Timelines and intensity of human impact were …
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A demographic and dietary history of ancient dogs in the Americas using ancient DNA
… studying human history. In this study, we use ancient dog remains from the Americas to gain an understanding of their demographic and dietary history, as well as that of humans. Mitochondrial DNA sequences of the hypervariable region of ancient dogs were compared to modern and ancient American …
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Using ancient DNA to infer impacts of European colonization on first nations populations in coastal British Columbia, Canada
… hypervariable segment (HVS1) of mitochondrial DNA (mtDNA) of 61 ancient PRH individuals and compared them to the descendant groups, the Lax Kw’alaams First Nation and Metlakatla First Nation. For context, I also compared the PRH individuals to the Nisga’a First Nation, the Stswecem’c Xgat’tem …
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Mitochondrial DNA analysis of the evolution and genetic diversity of ancient and extinct bears.
… it is becoming more and more evident that ancient DNA studies greatly augment traditional mtDNA studies based only on extant lineages, and can reveal more complex scenarios than those hypothesised from modern data alone. Ancient DNA studies allow us to trace historic and ancient gene flow …
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Diachonic DNA Analyses of Animal Breeds and Populations
… future breed conservation choices. Utilising ancient DNA data could potentially permit detailed diachronic analyses of the development of animal breeds. Ancient DNA analyses have typically focussed on large-scale biogeographic patterns in time and space, such as the spread of domesticates or …
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Ancestral Paths: Redefining local genetic ancestry and its inference with application to Europeans
… population history. Firstly, the sequencing of ancient genomes which gives us a snapshot of past genetic variation. We can therefore make inferences from observed genetic signatures present before historical events such as population bottlenecks and natural selection have obscured them from the …
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1,000 ancient genomes uncover 10,000 years of natural selection in Europe
Ancient DNA has revolutionized our understanding of human history. However, its potential for revealing how cultural evolution to adapt new lifestyles may have driven biological adaptation has not been met. We assembled genome-wide data from 1,291 individuals from Europe over 10,000 years, allowing …
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Human Mitochondrial DNA from 5th – 3rd Millennia BCE: An Analysis of Iberian Populations
… subsequent population dynamics are less clear. Ancient DNA data from the Neolithic period of coastal regions of the Iberian Peninsula are relatively scarce. The aim of the present study was to sequence DNA from Neolithic Iberians from the Spanish Levant (Catalonia) and the Portuguese …
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The origins and spread of the Neolithic in the Old World using Ancient Genomes
… reconstructing human evolution. Using Mota, an ancient genome from a male from the Ethiopian highlands, I showed a backflow into Africa by populations closely related to the Anatolian Neolithic farmers. The third chapter deals with some common problems and themes in the analysis of ancient DNA, …
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Investigating the emergence and spread of tuberculosis in South Africa
… a broader local and global understanding of this ancient pathogen. Ancient DNA detection and analysis was also attempted in order to compliment skeletal diagnoses and obtain strain informative sequences. Preservation, demographic and paleopathological data were collected for 2321 individuals, …
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Dialogues with the dead : an osteological analysis of the palaeodemography and life history of the 18th and 19th century northern frontier in South Africa
… virus is investigated through the analysis of ancient DNA.
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Eating identity: food, gender, and social organization in late Neolithic northern China
… radiocarbon dating, stable isotope analysis, and ancient DNA analysis of human remains. My radiocarbon dating results suggest that Liangwangcheng, Fujia, and Huating all date to 2800-2500 cal. BC, while Dongjiaying is a few centuries later (2600-2300 cal. BC). The contemporary nature of these …
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Mitochondrial DNA in ancient human populations of Europe.
… maternally inherited mitochondrial DNA has been studied in a wide array of modern populations in order to reconstruct the migrations that have participated in the spread of our ancestors on the planet. However, population genetic processes (e.g., replacement, genetic drift) can …
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Palaeoecology and population demographics of the extinct New Zealand moa (Aves: Dinornithiformes).
… the evolution of moa; New Zealand ecology; ancient DNA and its applications; and coalescent theory. The aims and structure of the thesis is then outlined. To investigate the New Zealand palaeoecosystem using moa, it is first necessary to examine the quality of the recent moa fossil record. …
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Between Culinary and Consecrated—The Introduction and Management of Turkeys in Greater Nicoya, Costa Rica
… management practices held critical roles in ancient societies, supporting reliable sources of food and other animal-derived products, as well as influencing cultural practices. These human-animal relationships include a plethora of interactions within local environments, yet only a few …
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Reassessing DNA Preservation of Ancient Material from Poulton, UK and Testing and Optimizing of CATS: a Novel Single-Strand DNA Library Preparation Technique
Sequencing of ancient DNA with low preservation is still a major challenge, despite the immense progress that the field of ancient genetic studies has made since its inception over thirty years ago. The main aim of this study was to reassess the DNA preservation of ancient medieval material from …
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