Search for dissertations about: "trait"

Showing result 1 - 5 of 533 swedish dissertations containing the word trait.

2. 1. Complex Trait Genetics : Beyond Additivity

   Author : Simon Forsberg; Örjan Carlborg; Julien Ayroles; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; genetic interactions; epistasis; additivity; GWAS; vGWAS; Genetic mapping; yeast; Arabidopsis Thaliana; dog; Genetik; Genetics;

   Abstract : The link between the genotype and the phenotype of an organism is immensely complex. Despite this it can, to a great extent, be captured using models that assume that gene variants combine their effects in an additive manner. This thesis explores aspects of genetics that cannot be fully captured using such additive models. READ MORE

4. 2. Investigation of immunological preconditions in MS patients "MS immunopathic trait"

   Author : Sara Haghighi; Göteborgs universitet; []
   Keywords : multiple sclerosis; siblings; CSF; oligoclonal; cytokine; sulfatide; genetics; trait;

   Abstract : We examined 47 MS patients, 47 healthy siblings and 50 healthy unrelated individuals with blood and CSF analysis and found that 19 % (9/47) of healthy siblings of clinically definite multiple sclerosis patients had an intrathecal immunological reaction to ¡Ý 2 CSF-enriched OCB, in contrast to 4% (2/50) of the unrelated healthy controls. We termed this condition ¡°MS immunopathic trait¡±. READ MORE

5. 3. Adaptive evolution in multidimensional trait spaces

   Author : Paula Vasconcelos; Claus Rüffler; Maria Servedio; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; adaptive dynamics; mutidimensional trait spaces; evolutionary dynamics; disruptive selection; resource competition; diversification;

   Abstract : Negative frequency-dependent disruptive selection, which arises due to the interplay between organisms of a population and their environment, is an important element driving phenotypic diversification and even speciation. Such selection regime can result from frequency- and density-dependent interactions between the organisms and their environment, so that the fitness landscape itself changes as the population evolves. READ MORE

6. 4. Evolution of Plants : a mathematical perspective

   Author : Magnus Lindh; Åke Brännström; Jacob Johansson; Mats G Larson; Lennart Persson; Claus Rüffler; Umeå universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Evolution; plants; mathematics; optimization; optimal control; adaptive dynamics; flowering; seasons; tree crown; drought; taproot; trade-off; strategy; trait; ESS; NPP; LAI; Red Queen; Mathematics; matematik;

   Abstract : The Earth harbors around 300 000 plant species. The rich and complex environment provided by plants is considered a key factor for the extraordinary diversity of the terrestrial fauna by, for example, providing food and shelter. READ MORE

7. 5. Quantitative Trait Evolution in a Changing Environment in a Seed Beetle

   Author : Lára R. Hallsson; Mats Björklund; Derek A. Roff; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; quantitative trait; genetic variance; environmental change; temperature; seed beetle; sexual dimorphism; plasticity; inheritance; Animal Ecology; Zooekologi;

   Abstract : During the last decades the climate has been changing more rapidly than in the preceding periods. This is for instance characterized by an increase in temperature. Interestingly, such changes in the environment are not necessarily constant over time as they often show high levels of fluctuation. READ MORE