نتایج جستجو برای: genetic covariance

تعداد نتایج: 641415  

Journal: :American journal of human genetics 2017
Qiongshi Lu Boyang Li Derek Ou Margret Erlendsdottir Ryan L Powles Tony Jiang Yiming Hu David Chang Chentian Jin Wei Dai Qidu He Zefeng Liu Shubhabrata Mukherjee Paul K Crane Hongyu Zhao

Despite the success of large-scale genome-wide association studies (GWASs) on complex traits, our understanding of their genetic architecture is far from complete. Jointly modeling multiple traits' genetic profiles has provided insights into the shared genetic basis of many complex traits. However, large-scale inference sets a high bar for both statistical power and biological interpretability....

ژورنال: علوم آب و خاک 2007
هانی رضائی, , همایون فرهنگ‌فر, ,

A total of 179,460 monthly test-day milk records (thrice a day milking) obtained from 17,946 Iranian Holstein heifers distributed in 287 herds and calved from 1986 to 2001 were used to predict breeding value of animals. Monthly test-day milk production was analysed by applying a covariance function in which the effects of herd-year-season of production (HYSOP), age at test day (covariate), addi...

2000
Karin Meyer

OBJECTIVE Covariance functions (CF) are, in essence, the ‘infinite-dimensional’ equivalent to covariance matrices for traits measured repeatedly, potentially infinitely many times, along some continuous scale such as time or age. CFs produce a continuous description of the covariance structure over time, giving the covariance between any two ages as a function of the ages. DXMRR allows the esti...

Journal: :Proceedings of the National Academy of Sciences 2006

Journal: :Evolution; international journal of organic evolution 2000
A V Badyaev G E Hill

Patterns of genetic variation and covariation strongly affect the rate and direction of evolutionary change by limiting the amount and form of genetic variation available to natural selection. We studied evolution of morphological variance-covariance structure among seven populations of house finches (Carpodacus mexicanus) with a known phylogenetic history. We examined the relationship between ...

Journal: :Journal of theoretical biology 2012
Robert P Gove William Chen Nicholas B Zweber Rebecca Erwin Jan Rychtář David L Remington

Discovering the mechanisms by which genetic variation influences phenotypes is integral to understanding life-history evolution. Models describing causal relationships among traits in a developmental hierarchy provide a functional basis for understanding the correlations often observed among life-history traits. In this paper, we evaluate a developmental network model of life-history traits bas...

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