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 49 for “"quantitative genetics"”.
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Understanding C4 Photosynthesis Through Quantitative Genetics
… to their biochemistry, cell biology and anatomy. Quantitative genetics offers an under-explored route to identify regulators of these processes. Taking advantage of the natural variation present for C4 characteristics in the dicotyledon Gynandropsis gynandra, this thesis aims to carry out linkage …
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Quantitative genetics and metabolomics of aerobic metabolism
The quantitative genetic, biochemical, and physiological bases of variation in maximal aerobic metabolic rate (MMR) are important for understanding exercise physiology and the evolution of aerobic performance, but they still are not well understood. To this end, I studied three aspects of MMR. …
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Quantitative Genetics of Height in Brachytic2 Corn
Made available in DSpace on 2014-12-04T20:17:05Z (GMT). No. of bitstreams: 1 6101659.pdf: 5488540 bytes, checksum: fb19488ff64cb87b8e062c8967bfeb7e (MD5) Previous issue date: 1961
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Quantitative genetics of gene expression during fruit fly development
… associated with many diseases as well as quantitative phenotypes, by exploiting naturally occurring genetic variation in large cohorts of individuals. More recently, the GWAS approach has also been applied to highthroughput RNA sequencing (RNA-seq) data in order to find loci associated …
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Designing and modeling high-throughput phenotyping data in quantitative genetics
Quantitative genetics aims to bridge the genome to phenome gap. The advent of high-throughput genotyping technologies has accelerated the progress of genome to phenome mapping, but a challenge remains in phenotyping. Various high-throughput phenotyping (HTP) platforms have been developed recently …
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Genetics in practice : applications of quantitative genetics to environment and educational pursuits
"The ability to elucidate quantitative trait architecture and introduce potentially beneficial traits makes introgression a useful tool. Unfortunately, due to the nature of inheritance there are certainly limitations to the usefulness of this approach for introducing quantitative traits to a …
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High throughput phenotyping and quantitative genetics of leaf functional traits in C4 grasses
The challenge of meeting the global demand for food and fuel is exacerbated by the need to increase plant productivity to maintain aboveground biomass and crop yield in suboptimal and resource limited environments. Improving crop productivity without increased resource use requires greater in whole …
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The Quantitative Genetics of Neurodevelopment: A Magnetic Resonance Imaging Study of Childhood and Adolescence
… using novel methods for semi-multivariate quantitative genetic analysis at the voxel level. Studies on interactions with age were mixed. We found evidence of gene by age interaction on frontal and temporal lobar volumes, indicating that the role of genetic factors on these structures is …
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Quantitative Genetics of Life History Microevolution in the Cayo Santiago Rhesus Macaques (Macaca Mulatta)
This is a study of the evolutionary genetics of a large colony of free-ranging rhesus macaques on Cayo Santiago, a small island located just off the coast of Puerto Rico. It focuses on documenting genetic and environmental influences on life history variation in female primates. The results are …
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Molecular Basis of Quantitative Genetics Revealed by Cloning and Analysis of 474 Genes Controlling Fiber Length in Cotton
… only provided a first line of evidence that a quantitative trait is controlled by a large number of genes, but also added new molecular basis, thus forming the molecular mechanisms of quantitative genetics.
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Constraints on the evolution of attractive traits: Natural selection, sexual selection and quantitative genetics in the zebra finch
I investigated the causes and consequences of bill color (an attractive male trait) variation in zebra finches (Taeniopygia guttata). The primary objective of my research was to test several predictions of the good-genes and runaway sexual selection hypotheses. In a 19 month breeding experiment, I …
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Cranial form evolution and functional adaptations to diet among papionins : a comparative study combining quantitative genetics, geometric morphometrics, and finite element analysis
… cranial forms by random genetic drift with a quantitative genetic model (previously tested for acceptable type I error rates); if rejected, different cranial forms should reflect adaptations to the particular biomechanical demands of different diets. To study those adaptations, hypotheses …
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Incorporation of Exotic Germplasm Into Adapted Maize Synthetics to Improve Grain Yield and Multiple Leaf Blight Resistance (Selection Response, Zea Mays, Quantitative Genetics, Corn)
Population testcrosses to FRB73 and to FRMo17 of maize (Zea mays L.) populations containing 0, 25, 50, and 100% exotic germplasm, 80 to 100 random S(,1) families from each population, and the populations per se were evaluated for grain yield and aggregate leaf disease resistance. One cycle of …
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Natural genetic and phenotypic variation for aging
… have largely utilized demography, population and quantitative genetics, and mathematical modeling methods to investigate aging from a population perspective. Mechanistic approaches, in contrast, use cellular and molecular methods to drill down to mechanism, usually in the context of highly …
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Genetic control and prediction of milling and baking quality for UK wheat breeding
… aims to redress this imbalance by taking a quantitative genetics approach to enable enhanced selection for milling and baking quality in collaboration with the DSV UK breeding programme. A wheat multi-parent advanced generation intercross population was used to investigate the genetic …
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Inheritance and Components of Resistance to Bipolaris Maydis Race O (Maize, Corn, Breeding)
… in 1981, 1982 and 1983. The first study was a quantitative genetics study of the inheritance of resistance in 12 families derived from inbreds determined to be highly resistant to this fungus. Additive genetic effects were highly significant in all families, accounting for 49.0% to 96.9% of the …
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Predicting the Antigenic Evolution of Influenza Viruses with Application to Vaccination Strategy
… of a computational approach from the field of quantitative genetics to this problem. Subsequently, I show that patterns in biophysical features of substitutions responsible for major antigenic change are far from random, begging the question: how predictable are these amino acid substitutions? …
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Ecology and evolution of invasive maple tree species
… contrasts, meta-analytical statistics and quantitative genetics, this· project sought to highlight specific environmental factors, species functional traits and evolutionary processes that drive the success of maple tree invasion. The two species currently exhibit different stages of …
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Identification and characterization of metabolic Quantitative Trait Loci (QTL) in Arabidopsis thaliana
… and its relation to plant growth using quantitative genetics methods. A special focus was set on the characterization of heterosis, the deviation of hybrids from their parental means for certain traits, on a metabolic level. More than 2000 samples of recombinant inbred lines (RILs) and …
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Evolution and development of morphological, allometric, and life history patterns in the spotted hyena (Crocuta crocuta)
… size is greater for females. I also address the quantitative genetics of morphological traits by estimating heritability; non-zero heritability is necessary for an evolutionary response to the observed selection. In its entirety, my dissertation results are consistent with the hypothesis that the …
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