Sökning: "additive genetic variance"

Hittade 4 uppsatser innehållade orden additive genetic variance.

  1. 1. Low heritability-high variance controversy for dairy cattle disease traits

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Maja Winther Iversen; [2014]
    Nyckelord :coefficient of variation; genetic variance; health traits; heritability; progeny groups;

    Sammanfattning : Traits with low heritability estimates such as health and fertility are often assumed to have low genetic variance. However, the heritability is a ratio of additive genetic variance over all variance, and thus, the genetic variation of these traits may only be proportionally small. LÄS MER

  3. 2. Genetic and Environmental Influences on Psychopathic Personality Traits : A Meta-Analytic Review

    Kandidat-uppsats, Örebro universitet/Institutionen för juridik, psykologi och socialt arbete

    Författare :Anna Meehan; Henrik Evertsson; [2013]
    Nyckelord :psychopathy; heritability; genetic; twin study; meta-analysis; psykopati; heritabilitet; genetik; tvillingstudie; meta-analys;

    Sammanfattning : To understand the etiology of psychopathic personality traits and thus in the long run to be able to develop successful prevention, a first step is to find out what role genetic and environmental effects play. A meta-review of 15 twin studies (N=26, 981), was conducted to estimate the magnitude of genetic and environmental influences on psychopathic personality traits. LÄS MER

  4. 3. Jaktprov hos brittiska stående fågelhundar

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Louise Holm; [2013]
    Nyckelord :Hunting dogs; genetic parameters; breeding;

    Sammanfattning : In 1996 a hunting test for British gun dogs was started in Sweden, based on a similar one al-ready in place in Norway. The aim of the new test was to describe the hunting ability of the dog and to use the results as a basis for selection. However, up to now, no genetic study of these data has been done. LÄS MER

  5. 4. Investigation of genetic correlation among traits using massive SNP genotype in German Holstein population

    Master-uppsats, SLU/Dept. of Animal Breeding and Genetics

    Författare :Esmaeil Amiri; [2010]
    Nyckelord :additive genetic variance; genetic correlation; dairy cattle; genotypes; milk yield; somatic cell count;

    Sammanfattning : The aims of this study were to demonstrate the genomic architecture of quantitative traits using Illumina BovineSNP50 Beadchip as well as the identification of chromosomes or SNPs affecting multiple traits in German Holstein population. For this research, a total of 2333 German Holstein bulls were genotyped for 54,001 SNPs. LÄS MER