Search for dissertations about: "Chicken"

Showing result 1 - 5 of 159 swedish dissertations containing the word Chicken.

  1. 1. Chicken domestication : Effects of tameness on brain gene expression and DNA methylation

    Author : Johan Bélteky; Per Jensen; Anna Kukekova; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; NATURAL SCIENCES; MEDICAL AND HEALTH SCIENCES;

    Abstract : Domestication greatly increases phenotypic variation in a short time span, with selection for a single phenotype and a plethora of associated phenotypic changes as an outcome of the process. The domestication process influences the underlying genomic architecture of a species, and the success and speed of the process is likely influenced by it. READ MORE

  2. 2. Chicken Genomics - Linkage and QTL mapping

    Author : Per Wahlberg; Leif Andersson; Ruedi Fries; Uppsala universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; chicken; quantitative genetics; linkage map; QTL mapping; recombination; long-term selection; Z chromosome; selective sweep; SNP; Genetics; Genetik;

    Abstract : This thesis presents results from genetic studies conducted in the chicken (Gallus gallus). The domestication of chicken is believed to have been initiated approximately 7,000 – 9,000 years ago in Southeast Asia. READ MORE

  3. 3. Genetic and Genomic Studies in Chicken : Assigning Function to Vertebrate Genes

    Author : Jonas Eriksson; Leif Andersson; Greger Larson; Göran Hjälm; Tosso Leeb; Uppsala universitet; []
    Keywords : Chicken; BCO2; TSHR; COMTD1; Phenotypic variation; Domestication; Selective sweeps; Pigmentation; Molekylär genetik; Molecular Genetics;

    Abstract : A major challenge in the post-genomic era is to understand how genome sequence variants (genotype) give rise to the enormous diversity observed in terms of morphology, physiology and behavior (phenotype) among living organisms. Domestic animals—with their tremendous phenotypic variation—are excellent model organisms for determining the relationships between genotype and phenotype. READ MORE

  4. 4. Mapping Genes Affecting Phenotypic Traits in Chicken

    Author : Susanne Kerje; Leif Andersson; Martien Groenen; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Genetics; chicken; Quantitative Trait Loci; growth; egg production; epistasis; plumage colour; Extended black; MC1R; Dominant white; PMEL17; Genetik; Clinical genetics; Klinisk genetik;

    Abstract : The purpose of gene mapping is to understand the underlying genetics of simple and complex traits like plumage colour and growth. This thesis is based on a cross between the wild ancestor of the modern chicken, the red junglefowl, and a White Leghorn line selected for high egg mass. READ MORE

  5. 5. Neuropeptide Y Receptors in Human, Guinea pig and Chicken : Cloning, in vitro Pharmacology and in situ Hybridization

    Author : Sara Holmberg; Helen Cox; Uppsala universitet; []
    Keywords : MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Neurosciences; G-protein coupled receptor; neuropeptide Y; neuropeptide Y receptor; ortholog; chicken; guinea pig; mutagenesis; receptor computer modeling; mRNA in situ hybridization; Neurovetenskap; Neurology; Neurologi; medicinsk farmakologi; Medical Pharmacology;

    Abstract : Neuropeptide Y (NPY) is known to influence a vast number of physiological and behavioral processes such as vasoconstriction, circadian rhythms, feeding, anxiety and memory. Peptides of the NPY family bind to five different cloned G-protein coupled receptor subtypes (Y1, 2, 4-6). READ MORE