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 45 for “"Genetic Relatedness"”.
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Evolution of Altruism and Eusociality: Toward a Cost/Benefit Analysis of Fitness and Genetic Relatedness
… to this theory. The modelers claim that relatedness is not causal, that eusocial behavior is very hard to evolve requiring more workers before the queen increased fitness, and that there is no conflict involved. Here I showed that, even within the terms of this modeling framework, …
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Genetic relatedness of Mycobacterium tuberculosis strains obtained from Kalafong Hospital in Pretoria using Spoligotyping and MIRU-VNTR typing
Every year close to 9 million people contract tuberculosis (TB) and approximately 2 million die from the disease. The highest number of TB cases is in Asia while Africa has the highest incidence rates due to high rates of HIV and malnutrition that weakens the immune systems and speeds up the spread …
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Genetic relatedness of the family Rhodospirillaceae: Genome plasticity, chromosome heterogeneity, and chalcogenic oxyanion reductase activity in Rhodobacter sphaeroides
"Intrinsic high-level resistance (HLR) to tellurite (TeO$\sb3\sp{2-}),$ selenite (SeO$\sb3\sp{2-}),$ and at least fifteen other chalcogenic oxides and oxyanions has been demonstrated in the facultative photoheterotrophic bacterium, Rhodobacter (Rba.) sphaeroides. Detailed analyses have shown that …
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Kin and social network structure in two populations of Octodon degus
… to form kin and non-kin groups. I quantified genetic relatedness within social groups in two populations as well as social network parameters (association, strength, and clustering coefficient) in order to determine if these aspects of sociality were driven by kinship. I analyzed social …
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COOPERATION AND COMPETITION AS A FUNCTION OF ZYGOSITY IN 7 TO 9 YEAR OLD SINGAPORE TWINS
… on the question of whether there is a clear genetic basis for the human social behaviours "cooperation" and "competition". Cooperation and competition were hypothesised to vary with genetic relatedness between the people engaging in these behaviours. A classic twin study, with young …
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Determining Plasmodium falciparum Malaria Transmission Networks Through Sequenom And Capillary Electrophoresis Genotyping
… transmission networks were inferred using genetic data. P. falciparum SNP data were analysed at micro-epidemiological scales in two sites in Kenya and one site in The Gambia, and in a subsequent study at macro-epidemiological scales in Western Kenya. Principal component analysis and linear …
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Molecular Characteristics and Dissemination Mechanism of Vancomycin-Resistant Enterococci: A Tertiary vs. Non-Tertiary Health Care Hospitals
… pathogen. The aim of this study was to examine genetic relatedness and dissemination mechanism by comparative analysis of the antimicrobial and biomolecular characteristics of VRE isolates from tertiary and non-tertiary health care hospitals in Korea. We studied a total of 54 clinical …
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Cognitive functioning in familial and nonfamilial groups at high-risk for schizophrenia
… for schizophrenia. High-risk was defined as (1) Genetic relatedness to an individual with schizophrenia, or (2) Extreme scores on a measure of schizotypy (i.e., Chapman Scales of Psychosis Proneness). Twenty-three subjects were administered a battery of neuropsychological tests. ANOVAs revealed a …
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Computer simulations of kin selection
… of kin selection require a measure of genetic relatedness; a computer program for calculating this statistic from genetic data on natural populations is described.
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Becoming a father / refusing fatherhood: how paternal responsibilities and rights are generated
… and empirically, the moral significance of genetic relatedness within the father/child relationship. In doing so I utilise a novel ‘empirical bioethics’ approach, in which I use specifically gathered qualitative data to inform the philosophical debate. I present qualitative data, gathered …
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Assessing the Phylogenetic and Cultural Content of Learned Song
… analysis of song databases coupled with genetic phylogenies, I have shown that there is indeed a significant correlation between genetic distance and song similarity in the oscines. For a subset of Emberizid species, it was possible to reconstruct a genus-level phylogeny using the song …
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Intraspecific variation in Erica coccinea
… have shown that these two regeneration forms are genetically determined and this dissertation investigates further the differences in floral morphology, phenology, fecundity and genetic relatedness across 29 populations. Results show patterns of seeder individuals investing more effort into nectar …
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Genetic and phenotypic diversity of bloodstream associated Staphylococcus epidermidis isolates obtained from private and public hospitals in South Africa
… and genotypic methods to investigate the genetic diversity and genetic relatedness of bloodstream associated S. epidermidis isolates collected from private and public hospitals in Gauteng. A total of 161 bloodstream associated S. epidermidis isolates were collected from private and public …
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Population genetics and transmission dynamics of Plasmodium falciparum in the Kavango East and Zambezi regions of Namibia
… marker set to determine P. falciparum genetic structure in the Kavango East and Zambezi regions of Namibia The study through population genetics analysis showed that the genetic structure of P. falciparum in Namibia follows the pattern of a high transmission setting, there are high …
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BRUCELLOSIS TRANSMISSION BETWEEN WILDLIFE AND LIVESTOCK IN THE GREATER YELLOWSTONE ECOSYSTEM: INFERENCES FROM DNA GENOTYPING
… using Network v4.61. Network assessments of genetic relatedness among Brucella isolates showed that genotypes from the 2008 cattle outbreak in Wyoming matched elk B. abortus genotypes, confirming elk as the likely source. Network assessments showed substantial interspecific transmission …
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BRUCELLOSIS TRANSMISSION BETWEEN WILDLIFE AND LIVESTOCK IN THE GREATER YELLOWSTONE ECOSYSTEM: INFERENCES FROM DNA GENOTYPING
… using Network v4.61. Network assessments of genetic relatedness among Brucella isolates showed that genotypes from the 2008 cattle outbreak in Wyoming matched elk B. abortus genotypes, confirming elk as the likely source. Network assessments showed substantial interspecific transmission …
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From The Mouths Of Mississippian: Determining Biological Affinity Between The Oliver Site (22-Co-503) And The Hollywood Site (22-Tu-500)
… only in the cultural materials but also in the genetic composition of the inhabitants of this area. Despite constant interaction, cultural restrictions prevented polities from intermixing and coalescent groups under the same polity formed subgroups grounded in their own identity as a result …
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Similarity in personal relationships : associations with relationship regulation between and within individuals
… partly alleviates the effects of missing genetic relatedness. Individual differences moderate these between-relationship effects. In all, results combine evolutionary and social psychological perspectives on similarity in personal relationships and extend previous findings by means of a …
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The migrant network effect : an empirical analysis of rural-to-urban migration in South Africa
… of the core analysis to assess the impact of genetic relatedness in conjunction with the migrant network effect suggests some evidence of a household bargaining process at play. The findings in this paper therefore suggest that social capital does indeed play a role along with physical and …
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Factors affecting VA-mycorrhizal community structure in the Namib Dune Field: and the population biology of an ectomycorrhizal Basidiomycete: Suillus granulatus
… fungal response to these abiotic factors. Genetic analyses of S. granulatus single spore isolates using RAPD markers showed that a post-meiotic mitosis in the basidium produces heterokaryotic spores. Secondary homothallism provides an effective means for long distance dispersal, and may …
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