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Dissertations / Theses on the topic 'Phylogenetic variation'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Cosner, Mary Elizabeth. "Phylogenetic and molecular evolutionary studies of chloroplast DNA variation in the campanulaceae /." The Ohio State University, 1993. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487847761306203.

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2

Niemi, A. K. (Anna-Kaisa). "Mitochondrial DNA variation in extremely selected traits: longevity and elite athletic performance." Doctoral thesis, University of Oulu, 2005. http://urn.fi/urn:isbn:951427699X.

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Abstract Mitochondria contain a maternally inherited 16,568bp genome (mtDNA) that encodes for 13 out of more than 70 subunits of complexes of the respiratory chain that produce ATP by oxidative phosphorylation (OXPHOS). As a byproduct of OXPHOS, reactive oxygen species (ROS) are formed, which may play a role in ageing. MtDNA has accumulated numerous polymorphisms during evolution, leading to haplogroups characterized by ancient polymorphisms and defined by letters. MtDNA polymorphisms are thought to be neutral, but some may be slightly deleterious or even advantageous and may influence phenoty

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3

Burleigh, John Gordon. "Variation in the process of molecular evolution and its impact on phylogenetic inference /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3052155.

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4

Medina, U. Claudia Alejandra. "Diagnostic and phylogenetic character variation in the genus Canthon Hoffmanssegg and related genera." Pretoria : [s.n.], 2006. http://upetd.up.ac.za/thesis/available/etd-03292006-112331.

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5

Millar, Timothy Robert. "Patterns of Genetic Variation in Rosette-Brachyglottis are Inconsistent with Current Species Delimitation." Thesis, University of Canterbury. Biology, 2014. http://hdl.handle.net/10092/9598.

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Brachyglottis (Asteraceae) is a genus of approximately 30 species in the Brachyglottidinae, a recently recognised sub-tribe of tribe Senecioneae. Within Brachyglottis is a clade of five species of rosette-forming herbs: B. bellidioides, B. haastii, B. lagopus, B. southlandica and B. traversii. A sixth species, B. saxifragoides, has recently been synonymised with B. lagopus. The rosette-Brachyglottis have historically been recognised as a taxonomically problematic group because species overlap in both morphology and geographical distribution. A recent molecular study of rosette-Brachyglottis us

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6

Cai, Qinyin. "Characterization of the genome in Timothy (Phleum pratense L.) : polyploid nature, phylogenetic relationships, and protein variation." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=70322.

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The genome constitution and phylogeny of hexaploid timothy (Phleum pratense L., 2n = 42) have been studied with C-banding and genome-specific DNA techniques. The cultivated species and two diploid wild relatives P. alpinum (2n = 14) and P. bertolonii (2n = 14) were karyotyped. In P. pratense, two sets of seven chromosomes could not be distinguished from each other either in gross morphology or in C-banding patterns and the third set was found to be differentiated from them. Two genomes, A and B, were established in this species presumably with the genome formula of AAAABB. The banded karyotype

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7

Achigan-Dako, Enoch G. "Phylogenetic and genetic variation analyses in cucurbit species (Cucurbitaceae) from West Africa : definition of conservation strategies /." Göttingen : Cuvillier, 2008. http://d-nb.info/991005759/04.

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8

Moilanen, J. (Jukka). "Non-neutral sequence variation in human mitochondrial DNA: selection against deleterious mutations and haplogroup-related polymorphisms." Doctoral thesis, University of Oulu, 2003. http://urn.fi/urn:isbn:9514271661.

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Abstract Mitochondrial DNA (mtDNA) is a maternally inherited 16.6 kbp circular genome that codes for 13 subunits of the mitochondrial respiratory chain, 2 rRNAs and 22 tRNAs. The mutation rate in mtDNA is high and therefore, mutations have accumulated sequentially to lineages that have diverged tens of thousands of years ago. The neutral theory predicts that a proportion of these variations may be slightly deleterious, associated with diseases and selected against, but the issue is still controversial. This study reports an analysis of selection against mutations in mtDNA. First, the populati

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9

Wetherington, Hattie Bea. "A phylogenetic approach for the study of variation and determination of population affiliation of indigent human skeletal remains." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001167.

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10

Luza, André Luís. "Estrutura taxonômica, filogenética e funcional de metacomunidades de pequenos mamíferos não-voadores de ecótonos campo-floresta no sul do Brasil." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2013. http://hdl.handle.net/10183/84946.

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Ecótonos campo-floresta no sul do Brasil são originados pela expansão de ecossistemas florestais sobre os campestres, um processo natural gerado por mudanças climáticas de larga escala espacial e temporal. Este processo provoca mudanças vegetacionais que consequentemente modificam os padrões de distribuição, composição e riqueza faunística. Assim, ecótonos campo-floresta são sistemas adequados para inferir sobre a influência de processos históricos, biogeográficos e ecológicos na estruturação de comunidades. Para respondermos questões relacionadas a processos agindo em diferentes escalas espac

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11

Soares, Leonor Brites. "Morfological and molecular variation of afroablepharus africanus (Gray,1845)." Master's thesis, Universidade de Évora, 2015. http://hdl.handle.net/10174/17524.

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The Guinea Lidless Skink, Afroablepharus africanus (Gray, 1845), occurs in the islands of São Tomé and Príncipe. These islands are known for harbouring an extremely rich biodiversity, with high levels of endemism. Many recent studies have shed lights on the still unknown biodiversity of these islands, resulting in the identification of many cryptic lineages and new species to science. The case of the Guinea Lidless skink has been studied several years ago by Jesus et al. (2007). Based on molecular data, the authors found that each island population belong to different lineages, being considera

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12

Andersen, Malin. "Computational and experimental approaches to regulatory genetic variation." Doctoral thesis, Stockholm : Bioteknologi, Kungliga Tekniska högskolan, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4593.

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13

Anane-Taabeah, Gifty. "Characterization of the molecular genetic variation in wild and farmed Nile tilapia Oreochromis niloticus in Ghana for conservation and aquaculture development." Diss., Virginia Tech, 2019. http://hdl.handle.net/10919/87410.

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The Nile tilapia Oreochromis niloticus is native to Africa and middle East, and is an important source of nutrition for many in sub-Saharan Africa. Understanding the genetic diversity within and differentiation among wild populations can help identify O. niloticus populations that are imperiled and require directed management, especially because of increasing threats to the species� long-term persistence in the wild, including habitat destruction, overfishing, climate change, and hybridization with farmed populations. Knowledge of the genetic variation among wild populations also can contribut

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14

Kuehnl, Kody F. "Exploring Levels of Genetic Variation in the Freshwater Mussel Genus Villosa (Bivalvia Unionidae) at Different Spatial and Systematic Scales: Implications for Biogeography, Taxonomy, and Conservation." The Ohio State University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=osu1253565660.

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15

Marston, Denise. "Utilisation of next generation sequencing to characterise novel lyssaviruses, improve phylogenetic inferences and investigate cross species transmission events." Thesis, Aix-Marseille, 2017. http://www.theses.fr/2017AIXM0541.

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Les virus zoonotiques sont une menace pour les humains à cause de leur capacité à passer des réservoirs animaux à l'homme. La rage est provoquée par un virus zoonotique (Virus de la Rage) qui a de multiples réservoirs animaux. La rage est contractée lors de la morsure par un animal infecté et est incurable et létale après l'apparition des premiers symptômes. Un défi visant à éradiquer la rage chez les chiens à l'horizon 2030 a été proposé. Il imposera de stopper la transmission du virus aux populations de chiens à partir des autres réservoirs animaux. Pour cela, il est essentiel de comprendre

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16

Magnus, Luíza Zuchetto. "ANÁLISE MORFOMÉTRICA DA SÉRIE MOLAR INFERIOR EM DIDELFÍDEOS (MAMMALIA)." Universidade Federal de Santa Maria, 2014. http://repositorio.ufsm.br/handle/1/5317.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>Tribosphenic molars are considered major innovations of mammals and are related to different structures and variables that may explain their adaptation. The aim of this study was to verify the relationship of body size, mandible shape and diet variables and all four molars of didelphid marsupials in a phylogenetic approach. Geometric morphometric analysis of shape of the lower molars were performed on 261 specimens, 130 females and 131 males, containing a total of 14 genera and 37 species of the Didelphidae family. Twenty- four ana

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17

Resende, Juliana Alves. "Avaliação da diversidade microbiana e do risco clínico-microbiológico de sistemas de biorreatores para produção de biogás e biofertilizante a partir de dejetos da pecuária leiteira." Universidade Federal de Juiz de Fora, 2013. https://repositorio.ufjf.br/jspui/handle/ufjf/726.

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18

Banks, Jill. "Genetic variation of avian influenza viruses relationship to their virulence and epidemiology." Thesis, Open University, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343751.

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19

Barton, Christopher. "Molecular phylogenetics and genotypic variation in Coleoptera : a bioinformatics approach." Thesis, Imperial College London, 2014. http://hdl.handle.net/10044/1/25134.

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A custom-built bioinformatics pipeline is used to costruct a species-level phylogeny for beetles (Coleoptera) using publicly available sequences from Genbank, including 8441 terminals 5 gene loci. 152 of 189 described beetle families are included, representing 2.17% of described species. The overall structure of publicly available data and its fit with Linnaean classifications are discussed. The dataset is further expanded by the inclusion of additional gene loci and relaxation of concatenation conditions, bringing total species to ~12,000. To overcome incomplete or incorrect identifications,

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20

Trader, Brian Wayne. "Molecular and Morphological Investigation of Astilbe." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28145.

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Astilbe (Saxifragaceae) is a genus of herbaceous perennials widely cultivated for their ornamental value. The genus is considered taxonomically complex because of its geographic distribution, variation within species, and the lack of adequate morphological characters to delineate taxa. To date, an inclusive investigation of the genus has not been conducted. This study was undertaken to (a) develop a well-resolved phylogeny of the genus Astilbe using an expanded morphological data set and sequences from the plastid gene matK, (b) use single nucleotide polymorphisms to determine the lineages of

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21

Duchene, Garzon Sebastian. "Understanding Evolutionary Rate Variation in Viruses." Thesis, The University of Sydney, 2014. http://hdl.handle.net/2123/13482.

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Estimating the rate of molecular evolution over time is crucial for understanding the processes and forces that shape biological diversity. Viruses are particularly interesting because they evolve much more quickly than cellular organisms. For example, the rates of evolution of influenza viruses are up to six orders of magnitude higher than those of mitochondrial DNA in vertebrates. This is one of the main explanations for the large proportion of infectious diseases caused by viruses. Having high rates of evolution allows viruses to evade the immune response of their hosts and to infect differ

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22

Allnutt, Theodore Richard. "The study of genetic variation in trees using the random amplified polymorphic DNA (RAPD) technique." Thesis, Liverpool John Moores University, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.319848.

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23

Geleta, Mulatu. "Genetic diversity, phylogenetics and molecular systematics of Guizotia Cass. (Asteraceae) /." Alnarp : Department of Plant Protection Biology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200727.pdf.

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24

Zariquiey, Roberto, Alonso Vásquez, and Gabriela Tello. "Lenguas y dialectos pano del Purús: una aproximación filogenética." Pontificia Universidad Católica del Perú, 2017. http://repositorio.pucp.edu.pe/index/handle/123456789/103273.

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El presente artículo ofrece una propuesta de clasificación de las variedades lingüísticas pertenecientes a la familia lingüística pano habladas en la provincia del Purús (región Ucayali, Perú). Los datos empleados recogen información léxica sobre nueve de estas variedades lingüísticas e información gramatical sobre ocho de ellas. Este material ha sido analizado empleando métodos filogenéticos y demuestra la pertinencia de agrupar a todas estas lenguas en un subgrupo al interior de la familia pano. Sin embargo, los resultados revelan una contradicción entre los datos provenientes del léxico y l

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25

Yoshikawa, Akihiro. "Evolutionary relationships of the inter/intraspecific color variations on the pereopods of the intertidal hermit crab Clibanarius Dana, 1852." Kyoto University, 2020. http://hdl.handle.net/2433/253118.

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26

Slotta, Tracey Ann Bodo. "Phylogenetics of the Malacothamnus alliance (Malvaceae): Assessing the role of hybridization and molecular and morphological variation in species delineation." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/11204.

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The Malacothamnus alliance consists of three genera, Iliamna, Malacothamnus, and Phymosia. The genera are considered taxonomically complex since hybridization freely occurs, polyploidy levels vary, and there is a lack of distinct morphological characters to delineate taxa. Several taxonomic treatments have been prepared for each genus, but relationships within the genera and the relationship of the Malacothamnus alliance to others in the Malvaceae remains unknown. This multifaceted study aimed to (a) examine the monophyly of the Malacothamnus alliance and its position in the Malvaceae, (b

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27

Bolton, Samuel John. "The Nematalycidae (Acariformes): An exploration of large-scale morphological variation and evolution using low-temperature scanning electron microscopy." The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1461084499.

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28

Wright, Bethany Ann. "Systematic studies in the genus Phlox (polemoniaceae): cytotypic variation in Phlox nana nutt. and utility of a low copy nuclear gene region (IDHB) for phylogeny development." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18242.

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Master of Science<br>Department of Biology<br>Carolyn J. Ferguson<br>The genus Phlox L. presents intriguing opportunities for systematics research, and P. nana is of particular interest. Phlox nana occurs chiefly in mountains of the Chihuahuan desert to northern New Mexico, and it exhibits much morphological variation across its range. Historically, this taxon has been recognized as a single species (sometimes with infraspecific taxa), or as several species. Perhaps most interesting, variation in ploidy level (cytotypic variation) has been evidenced for P. nana. This research employed flow cyt

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29

Silva, Cibele de Cássia. "Estrutura filogenética e variação de caracteres funcionais em cerrados rupestres do Brasil Central." Universidade Federal de Goiás, 2016. http://repositorio.bc.ufg.br/tede/handle/tede/5847.

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Romani, Bizhan. "Mutagenesis and functional studies of the HIV-1 vpr gene and Vpr protein obtained from South African virus strains." Thesis, Stellenbosch : University of Stellenbosch, 2010. http://hdl.handle.net/10019.1/6702.

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Thesis (PhD)--University of Stellenbosch, 2011.<br>ENGLISH ABSTRACT: Background: Human immunodeficiency virus type 1 (HIV-1) viral protein R (Vpr) is an accessory protein that interacts with a number of host cellular and other viral proteins. Vpr exerts several functions such as induction of apoptosis, induction of cell cycle G2 arrest, modulation of gene expression, and suppression of immune activation. The functionality of subtype C Vpr, especially South African strains, has not been studied. The aim of this study was to describe the diversity of South African HIV-1 subtype C vpr genes

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31

Jane, Wiegrefe Susan. "Molecular genetic variation in the ulmaceae phylogenetic implications /." 1992. http://catalog.hathitrust.org/api/volumes/oclc/28289677.html.

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32

Sebola, Ramagwai Joseph. "Taxonomic variation, species limits and Phylogenetic relationships in Oliniaceae." Thesis, 2012. http://hdl.handle.net/10539/12069.

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A new classification of the Oliniaceae is presented. The monogeneric Oliniaceae is one of the smallest, but lesser known myrtalean families that has not been monographed since Cufodontis’ (1960) revision, despite advances in analytical tools. In this thesis, a combination of morphometric phenetic (principal component analysis, principal coordinate analysis, and cluster analysis) and phylogenetic (cladistics) methods of analyses were used to critically evaluate the morphological variation; to determine the best taxonomic characters (quantitative and qualitative); and, based on these characters,

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33

Weyer-Menkhoff, Jan. "New quartet methods in phylogenetic combinatorics /." 2003. http://www.loc.gov/catdir/toc/fy0707/2005421164.html.

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34

Van, der Bank Michelle. "Genetic variation and phylogenetic relationships in the Podalyrieae and related tribes (Fabaceae)." Thesis, 2012. http://hdl.handle.net/10210/7518.

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Ph.D.<br>Genetic variation estimates and phylogenetic studies (based on genetic differentiation) of the Podalyrieae and related tribes (family Fabaceae) are presented. The tribe is endemic to the Cape fynbos region of South Africa, except for Calpurnia. Although Podalyrieae have been the focus of many taxonomic studies no genetic variation studies have been done on this group of plants. Genetic variation in selected populations, species and genera was studied to evaluate the use of enzyme electrophoresis in systematic studies on these three levels. Eight case studies are presented. Allelic dat

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35

Su, Yi Ting, and 蘇沂婷. "Studies on the Agronomic Character Variation and Phylogenetic Relationship in Ricinus comminus L." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/4fx55t.

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碩士<br>國立嘉義大學<br>農藝學系研究所<br>97<br>Castor ( Ricinus communis L.), containing 40~60％ oil content in its seed, is an important industrial oil in the world. There are not many studies published with respect to genetic diversity and phylogenetic relationship in castor researches. In our study, we collected 30 accessions (including 23 accessions from China and 7 accessions from Taiwan), and cultivated at Chiayi area both in 2007 and 2008 crop seasons. First, we survey 15 agronomic characters at seed maturation stage. In order to understand the relationship among these characters, the correlation and

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36

Hsu, Kuo-Kai, and 徐國凱. "Phylogenetic Relationships of Taiwan Native Rhododendron spp. (Ericaceae) Based on Chloroplast DNA Variation." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/01840320927626596951.

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碩士<br>中國文化大學<br>生物科技研究所<br>88<br>PCR/RFLP, AFLP and sequence comparisons of the chloroplast trnF-trnL intergenic spacer region were used to analyze phylogenetic relationships among specimens of the 8 native species of Rhododendron in Taiwan. Polymerase chain reaction (PCR) amplified chloroplast intergenic spacer trnS4/trnT region was treated with 6 restriction enzyme including Hinf I、Sau3A I、Hae III、Hpa II、Dde I and Rsa I. Restriction fragment of trnS4/trnT revealed no difference between R. pseudochrysanthum, R. morii and R. rubropunctatum. AFLP marker revealed highly similarity als

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37

Wu, juei-er, and 吳瑞娥. "Study on the genetic variation of Trochodendron aralioides and its phylogenetic relationship with allies." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/76193559788523425770.

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博士<br>國立臺灣師範大學<br>生物研究所<br>89<br>Trochodendron aralioides Sieb. & Zucc., a species of the monotypic family Trochodendraceae is an evergreen tree characterized by vesselless wood. This primitive angiosperm is restricted to the East Asia in distribution. The purpose of this study is to investigate the population structure of this narrow distributed species and to explore the phylogeny of T. aralioides and its allies. Multiple data of allozyme, and nucleotide sequences of the internal transcribed spacers (ITS) of ribosomal DNA were used to investigate genetic structure. Nineteen (al

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Medina, Uribe C. A. (Claudia Alejandra). "Diagnostic and phylogenetic character variation in the genus Canthon Hoffmannsegg and related genera (Coleoptera: Scarabaeidae: Scarabaeinae)." Diss., 2001. http://hdl.handle.net/2263/23557.

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Morphological variation was examined in 58 species of Canthon and 18 species of other genera of the subtribe Canthonina (Anisocanthon, Canthonella, Cryptocanthon, Deltochilum, Hansreia, Holocanthon, Malagoniella, Melam canthon, Scybalocanthon, and Sylvicanthon). A total of 667 specimens was used for examination of morphological characters. Variation in head structures such as clypeus, eyes, labium, gula, and epipharynx is described. Thoracic structures examined include the pronotum, prosternum, and posterior and medial tibiae. Other structures examined were the elytra, pygidium, and male genit

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39

Hofmann, Dieter. "Blood hematology and biochemistry, population genetic variation and phylogenetic relationships between selected South African turtle taxa." Thesis, 2012. http://hdl.handle.net/10210/4293.

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M.Sc.<br>Southern Africa has the world's greatest diversity of terrestrial and freshwater turtles. The law on turtles kept as pets recently changed and in the process conservation authorities have confiscated numerous terrestrial and freshwater turtles. Relocating programs was an obvious solution but the contamination of healthy gene pools is a big concern. As a result this study involved the determination of genetic variation within and between two freshwater turtle species (Pelomedusa subrufa and Pelusios sinuatus). Hematological and biochemical plasma parameters and Hematozoa infections of

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向高世. "Phylogenetic Relationships and Biogeography in the Genus Japalura of Taiwan Base on the Variation of mtDNA Sequences." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/69422676079653216724.

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碩士<br>國立中山大學<br>生命科學研究所<br>85<br>The 24 agamid lizards of genus Japalura are widely distributed in North Vietnam, Nepal, northern India, southwestern part of mainland China (not including the costal provinces) , Taiwan and Ryukyu Islands of Japan. Based on the variation of 12S rRNA fragment of mtDNA, I analyzed five species of Japalura (Including Japalura swinhonis, Japalura polygonata, Japalura brevipes, Japalura makii and Japalura luei) of Taiwan and Ryukyu Islands using Japalura varcoae and Calotes emma as outgroup species. The results show that each species of Genus Japalura are apparent

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Chang, Wei-Hua, and 張偉華. "Genetic variation and phylogenetic analyses of conserved Lanyu pigs and exotic pig breeds in Taiwan by microsatellite markers." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/36494062867616379150.

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碩士<br>臺灣大學<br>動物科學技術學研究所<br>95<br>The Lanyu pig is an indigenous pig breed from Lanyu Islet and is classified as a miniature pig breed. For the purpose of developing laboratory swine, Lanyu pigs were introduced into Taiwan by the Department of Animal Husbandry, National Taiwan University and Taitung Animal Propagation Station in 1975 and 1980, respectively. These pigs were reared in isolation as two herds and performed random mating until 2004. The genetic diversity within all the conserved Lanyu pigs remained unknown. Many exotic pigs breeds including Taoyuan, Meishan, Landrace, Duroc and Yor

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42

Symula, Rebecca E. "Evolutionary and ecological influences on color pattern variation in the Australian common froglet, Crinia signifera." 2009. http://hdl.handle.net/2152/10634.

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Elucidation of mechanisms that generate and maintain population-level phenotypic variability provides insight into processes that influence within-species genetic divergence. Historically, color pattern polymorphisms were used to infer population-level genetic variability, but recent approaches directly capture genetic variability using molecular markers. Here, I clarify the relationship between genetic variability and color pattern polymorphism within and among populations using the Australian common froglet, Crinia signifera. To illustrate genetic variability in C. signifera, I used phylogen

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陳婉玲. "Phylogenetic relationships of soybean accession by the nucleotide sequences variation of the chloroplast atpB-rbcL noncoding region and ITS1 of nuclear ribosomal DNA." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/30193003253003650097.

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碩士<br>國立嘉義大學<br>園藝學系研究所<br>94<br>Soybean, Glycine max（L.） Merrill, is an annual crop and belongs to Leguminosae Glycine. The genus Glycine consists of the subgenera Soja and Glycine. The subgenus Soja consists of G. max, cultivated soybean, and its wild G. soja. In order to enhance the competition ability in the market of vegetable soybean, new cultivars developed by breeders are needed. It will be a great contribution to many breeders. The objective of this study was to utilize atpB-rbcL sequences and DGGE of rDNA ITS1 to evaluate the genetic diversity among 53 soybean accessions collected fr

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Prohaska, Sonja J., Guido Fritzsch, and Peter F. Stadler. "Rate variations, phylogenetics, and partial orders." 2008. https://ul.qucosa.de/id/qucosa%3A31992.

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The systematic assessment of rate variations across large datasets requires a systematic approach for summarizing results from individual tests. Often, this is performed by coarse-graining the phylogeny to consider rate variations at the level of sub-claded. In a phylo-geographic setting, however, one is often more interested in other partitions of the data, and in an exploratory mode a pre-specified subdivision of the data is often undesirable. We propose here to arrange rate variation data as the partially ordered set defined by the significant test results.

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Su, Chun-Hung, and 蘇俊泓. "Phylogenetic variations of microsatellite polymorphism on country chicken breeds in Taiwan." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/09049279192788663572.

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碩士<br>中國文化大學<br>生物科技研究所<br>89<br>Taiwan has gained great progression on preserving country chicken breeds at three different levels of activities including in itu and ex situ live animals, cryogenic storage of reproductive tissue, and molecular conservation. Commercial country chicken breeds of GP, PS, and B were established by Government Research Institute. More than ten breeds of country chicken have been preserved with a total population size of 103 male and 252 female birds at Chung-Hsin University. Breeding local chicken strains with molecular and cytogenetic monitoring techniques is a

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Wang, Chia-Ching, and 王嘉慶. "Phylogenetic variations of microsatellite polymorphism on local porcine breeds in Taiwan." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/39247741002295012015.

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碩士<br>中國文化大學<br>生物科技研究所<br>89<br>The thesis study is to explore genetic relationship of porcine breeds by microsatellite DNA polymorphism. Genomic DNA from porcine breeds including Taiwan local strain (Lanyu), China strains (Meishan and Taoyuan), western strains (Berkshire, Landrace, Yorkshire, and Duroc), and as well hybrid strains (Spotty, Mitsai, and Lee-Sung) were employed for microsatellite DNA amplification, NTSYS, Winboot, and AMOVA analysis. The absence or presence of allelic microsatellite DNA bands are recorded in 0/1 binary format for calculating genetic distance among porcine str

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Steeves, Royce Allan David. "An Intrageneric and Intraspecific Study of Morphological and Genetic Variation in the Neotropical Compsoneura and Virola (Myristicaceae)." Thesis, 2011. http://hdl.handle.net/10214/3044.

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The Myristicaceae, or nutmeg family, consists of 21 genera and about 500 species of dioecious canopy to sub canopy trees that are distributed worldwide in tropical rainforests. The Myristicaceae are of considerable ecological and ethnobotanical significance as they are important food for many animals and are harvested by humans for timber, spices, dart/arrow poison, medicine, and a hallucinogenic snuff employed in medico-religious ceremonies. Despite the importance of the Myristicaceae throughout the wet tropics, our taxonomic knowledge of these trees is primarily based on the last revision of

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Christmas, Matthew John. "Assessing genomic variation in the hopbush, Dodonaea viscosa, to investigate micro-evolution and adaptation." Thesis, 2016. http://hdl.handle.net/2440/119801.

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In this thesis I use a range of genomic tools in order to investigate aspects of the evolutionary history of the hopbush, Dodonaea viscosa (L.) Jacq. (hopbush). Understanding the past evolutionary processes that have led to the distribution and adaptation of contemporary populations can help to inform on how populations may continue to adapt into the future. A changing climate is altering selection pressures and populations will need to adapt to these if they are to persist. I pay consideration to how plant populations may adapt to a changing climate, as well as what constrains adaptive respon

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Chang, Shih-Wei, and 張仕緯. "Molecular phylogenetics of the genus Tamiops and geographic variation in genetics and morphology of Tamiops maritimus formosanus in Taiwan." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/48074658759421404601.

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博士<br>東海大學<br>生命科學系<br>99<br>Current classification of the Asian striped squirrel (genus Tamiops) is mainly based on pelage color pattern that is prone to seasonal variation or convergent adaptation to environmental selection. The arrangement of four species, Tamiops mcclellandii, T. rodolphii, T. swinhoei and T. maritimus, is regarded as tentative due to difficulty delineating species, especially the latter two species. To overcome difficulties of classification based on pelage and to clarify its evolutionary patterns over a large geographic scale, I studied the molecular phylogenetics of Tam

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Soubrier, Julien Benoit Adrien. "What (molecular) time is it? : using ancient DNA to date evolutionary events." Thesis, 2012. http://hdl.handle.net/2440/96464.

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This work aims to explore the use of genetic sequences sampled serially through time (heterochronous data), to infer the timescale of past evolutionary events. Such data can be generated from preserved sub-fossil or fossil organismal remains (like mummified tissues, fossilized bones or coprolites), and then used to observe genetic modifications in real-time. Most importantly, the dates of the samples provide firm temporal tie points for their genetic sequences, and can be used to calibrate phylogenetic reconstructions. This thesis presents several case studies where ancient DNA was used to re-

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