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 45 for “"genetic correlation"”.
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Distribution of Estimates of Heritability and Genetic Correlation Derivedfrom Random Samples From a Large Population of Hir Records
Made available in DSpace on 2014-12-10T17:37:55Z (GMT). No. of bitstreams: 1 6915350.pdf: 2539722 bytes, checksum: 67849d0b213a60ec9c2617cec99d1507 (MD5) Previous issue date: 1969
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Evaluation of Seed-Filling Period as an Indirect Selection Trait for Higher Yield and Its Relationship With Nitrogen Parameters in Soybean
… of SFP is higher than that for yield, and genetic correlation between SFP and yield is high. Relative selection efficiency of gain (p) was computed to determine the merit of using SFP in indirect selection for yield. Soybean population 1 and 2 were derived from cross PI 398.881 x PI 398.763 …
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The genetics of autism and related traits
… converging at 60 – 90% heritability. Common genetic variants are thought to additively contribute to as much as 50% of the total risk for autism. In this thesis, I investigate the contribution of common genetics variants (including SNPs, and InDels) to autism and related traits. In Chapter 1, …
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Estimation of genetic parameters for development of alternative selection criteria for increased litter size in Rambouillet sheep
… needed to estimate heritabilities of and genetic correlations among litter size, ovulation rate, scrotal circumference and body weight in Rambouillet sheep were estimated using REML (Restricted Maximum Likelihood) via an EM (Expectation-Maximization) type algorithm. Data were obtained from …
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Estimation of the genetic parameters of boron and sorbitol concentration in fruit from a pear breeding population, and investigation of the relationship between these traits on the occurrence of flesh spot decay
… This study was carried out to estimate genetic parameters, in particular narrow-sense heritabilities and additive genetic correlations, of boron (B) and sorbitol contents and FSD in pear fruit. Approximately ten trees from each of twenty families of a breeding population were used in …
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A diversified exploration of beef cattle genetics: miRNA and beef bull fertility in beef and dairy female populations
… expression as it relates to quantitative traits, genetic analysis of sire conception rate (SCR) in dairy cow and beef heifer populations, and the genetic correlation between SCR in both populations. The objectives of the miRNA project were to elucidate differentially expressed (DE) miRNA resulting …
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Common variants in antibody deficiencies
… charac- terised by immune dysfunction of genetic origin. Many of these disorders represent canoni- cal examples of Mendelian disease and study of their genetic aetiology is largely conducted within a rare-variant, monogenic paradigm. However, most cases of the two most common IEIs, …
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Heritability of Nociception and Antinociception in the Laboratory Mouse
… of this variability is due to inherited genetic factors. We present genetic correlation analyses of 22 nociceptive measures among a common set of inbred mouse strains, revealing the existence of five fundamental ""types"" of nociception: (1) baseline thermal; (2) spontaneous responses to …
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Functional and cross-trait genetic architecture of common diseases and complex traits
… for learning about diseases and traits from genetic data. First, I introduce a method for partitioning heritability by functional annotation from genome-wide association summary statistics, and I apply it to 17 diseases and traits and many different functional annotations. Next, I show how to …
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Correlated response and sexual dimorphism in bidirectional selection experiments
… showed that they were the ratio of the genetic to phenotypic covariances of the two traits. The second experiment involved the investigation of sex dimorphism for body weight at eight weeks of age. The heritability estimate for sex dimorphism of this trait was .02, and the genetic …
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Breeding Design for Atlantic Cod (Gadus morhua L.)
… Iceland. Throughout the rearing an estimation of genetic (co)variation of economically important traits and genotype by environment interactions (G×E) among the two rearing locations were explored. Atlantic cod in Iceland shows high additive genetic variance for body weight (h2 = 0.34), suggesting …
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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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EXPLORING THE CORRELATION OF THE PRESENCE OF THE ST3GAL3 GENE IN INDIVIDUALS DIAGNOSED WITH ATTENTION DEFICIT HYPERACTIVITY DISORDER USING LOOP MEDIATED ISOTHERMAL AMPLIFICATION WITH COLORIMETRIC DETECTION
… can be considered a disorder with significant genetic components. More recent literature points towards the ST3GAL3 gene as a significant source for this genetic correlation. If ST3GAL3 gene plays a significant role in genetically linked ADHD, then we should be able to detect a normal ST3GAL3 …
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Spatial Genetic Structure in the Mount Vernon Prairie Population of Rudbeckia Hirta
It has frequently been predicted that genetic variation in plant populations will be structured in space as a result of isolation by distance, but this prediction has seldom been tested. This study quantified the magnitude and scale of spatial genetic structure in a natural population of the …
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The Genetic Architecture of Juvenile Migration in Rainbow Trout (Oncorhynchus mykiss)
… life history, little is known of the underlying genetic architecture modulating this adaptive tactic. Using quantitative and molecular genetic techniques I describe the genetic basis of the marine migratory life history in three focused research chapters.</p> <p>In the first I conduct a …
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The genetics of cognition in Schizophrenia
… are highly heritable, and that there is a genetic contribution to cognitive impairment in schizophrenia. However, insights into the genetic determinants of cognitive function in schizophrenia remain limited. The overarching aim of the study is to extend current understanding of cognitive …
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The genetics of cognition in Schizophrenia
… are highly heritable, and that there is a genetic contribution to cognitive impairment in schizophrenia. However, insights into the genetic determinants of cognitive function in schizophrenia remain limited. The overarching aim of the study is to extend current understanding of cognitive …
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Family growth response to fishmeal and plant-based diets shows genotype x diet interaction in rainbow trout (Oncorhynchus mykiss)
… utilize plant-based diets for growth and the genetic variation for that trait have not been thoroughly examined. In this study, growth of a pedigreed population from the commercial Kamloop strain was assessed while feeding plant-based or traditional fishmeal-based diets. Both fish oil (5.00%) …
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Fishing For The Evolutionary Bases Of Female Ornamentation
… I examine the behavioral, hormonal, and genetic correlates of female throat coloration—a male typical trait—in the threespine stickleback fish (Gasterosteus aculeatus), to test whether the evolution of the female trait might be attributed to adaptive or nonadaptive mechanisms. My results …
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Selection and Assortative Mating
… formulae were derived for phenotypic and genetic variances and covariances after t generations of assortative mating based on linear combinations of phenotypic values of two traits (mating rules). Selection efficiency after t generations of assortative mating without selection was …
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