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 36 for “"genetic influence"”.
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Genetic influence on brain volumes in psychosis.
This study explored the genetic influence of susceptibility genes on brain volumes in psychosis. More specifically, I explored whether certain allelic variations are associated with global brain volumes in subjects with psychosis, their relatives and in healthy controls. To increase the statistical …
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Understanding Zea mays genetic influence on the structure and function of the rhizosphere microbiome
… plant rhizosphere microbiome is driven by plant genetic and evolutionary history. Plant microbiomes play a major role in altering plant resilience, fitness, nutrition, and productivity. Plant hosts selectively filter microorganisms that colonize their rhizosphere. This selective process is …
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Prevalence of interleukin-1 polymorphisms and its association with periodontal disease status in the Xhosa population of South Africa
… experimental evidence indicates that there is a genetic influence of risk factors for periodontitis. A specific pattern of IL-1 polymorphisms (known as the composite IL-1 genotype) has been found to influence the severity of chronic periodontitis. The objective of this study was to evaluate the …
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THE GENETIC BASIS OF INTERSPECIFIC FEMALE PREFERENCE IN DROSOPHILA SIMULANS
Behavioral differences between species have a genetic basis and contribute to species isolation. Genomic regions have been identified that influence female rejection of heterospecific males on the right arm of the third chromosome in Drosophila, however, no individual loci have been identified. …
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Polymorphisms in Dopamine System Genes DAT1 and DRD4 are Associated with Disinhibitory Psychopathology in Adolescence
The specificity of genetic influence upon childhood disorders of behavioral disinhibition is uncertain. Polymorphisms in dopamine system genes have been implicated in the contribution of risk for attention-deficit/hyperactivity disorder (ADHD), and other externalizing behavior disorders, but the …
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Genome-wide polygenic scores, executive function, and attention-deficit/hyperactivity disorder in youth
… is highly heritable, the processes by which genetic risk affects its development are poorly understood. Potential mechanisms that may contribute to the development of ADHD, possibly by sharing common genetic risk, include impairments in executive functions. The goal of the present study was …
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Parent-child mutuality: An examination of its influences and stability in a twin sample
… in children, was examined. In addition, the influences of genes, parent personality, and child temperament on PCM were explored. It was expected that the components of parent-child mutuality, mutual cooperation and positivity, would be stable across ages three to five. In addition, it was …
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The development of the curve of spee in Australian twins.
… in Australian twins as well as to quantify the genetic contribution to the shape of the curve of Spee. The material used in the following study is part of an ongoing project at the University of Adelaide, investigating teeth and faces of twins. The sample investigated comprised pairs of …
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Aronia mitschurinii: Solving a Horticultural Enigma
… revealed <em>A. mitschurinii</em> to possess genetic influence from the genus <em>Sorbus</em> subgenus <em>Sorbus</em>.</p>
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Genetics of Experience: Genetically Sensitive Approaches to Measuring Childhood Environment
Environmental experience is not free of genetic influence. Through genetically-influenced behaviours, genes can influence exposure to certain environments: gene-environment correlation. Particular genotypes may also be more or less sensitive to the effects of the environment: gene-environment …
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Bone Properties of Recombinant Inbred Line - BXD Mouse
… are quantitative and also highly regulated by genetic and environmental factors. As a powerful tool for collaborative analysis of quantitative traits and gene function, BXD recombinant inbred (RI) lines mice have been used to identify genetic effects for bone density.</p> <p>For the first time, …
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Associations between traits (blood pressure and body height growth) and reproductive timing related genetic variants from genome-wide association studies
… studies (GWAS) have identified many common genetic variants that are associated with women’s reproductive timing characteristics including ages at menarche and at natural menopause. However, the associations of these variants with other human health related phenotypes such as blood pressure, …
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Genes and environment in language acquisition : a study of early vocabulary and syntactic development in twins
… development of the Inflectional system also have genetic influence.
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The genetics of sports behaviour : the role of the DRD4 gene in sensation seeking in skiers
Previous research has shown a large genetic influence over personality traits, especially sensation seeking. One gene thought to influence this behavioural trait is the dopamine-4-receptor gene (DRD4), in which variants have been associated with sensation seeking and novelty seeking in some, but …
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Lipoprotein-associated phospholipase A2 (Lp-PLA2) Impact and role as cardiovascular risk marker
… with traditional CV risk factors, to asses the genetic influence of PLA2G7 on plasma levels of Lp-PLA2, and to study the morbidity and mortality of cardiovascular disease (CVD) in relation to Lp-PLA2. Data from the population-based “Malmö Diet and Cancer” CV cohort (n=6103) was used. Information …
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Vulnerability to substance dependence
… current studies was to examine associations with genetic variation, impulsive sensation seeking (ImpSS) and responsiveness to substance-related stimuli among four hundred individuals (100 alcoholics, 100 heroin abusers, 100 smokers and 100 controls), who each completed questionnaires measuring …
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Genome-Wide Association Analysis of Major Depressive Disorder and Its Related Phenotypes.
… risk factors for MDD, identify genome-wide genetic variants affecting neuroticism and age at onset as quantitative traits, and detect gender differences influencing neuroticism.</p><p>Bivariate and multiple logistic regression analyses were performed on 1,738 MDD cases and 1,618 non-MDD …
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The Role of the Nhlh2 Protein in Regulating Male Fertility and Sexual Development
… many causes, ranging from lifestyle factors to genetic influence. There are a variety of treatments that exist, including lifestyle intervention, medication, and surgery. However, work needs to be done to find more effective solutions to congenital infertility in men. The nescient …
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Molecular Approaches to the Genetics of Obesity: Mapping and Characterization of the Murine Diabetes (db) Gene
… populations indicate that there is a substantial genetic influence on body composition in both children and adults. However, in no single instance in either man or animals is the precise etiology of obesity known at the molecular level. Attempts to identify the molecular basis responsible for …
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Genetic determinants of rates of cognitive decline in preclinical Alzheimer’s Disease
… work needs to be conducted to determine what influences rates of change during these early disease stages. Of particular focus is the rate of decline in cognitive performance, as it is the primary outcome measure of efficacy in clinical trials. A number of genetic variants have been associated …
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