additive genetic effects

additive genetic effects

Genetic effects which occur when the combined effects of alleles at different loci are equal to the sum of their individual effects.
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3] are corresponding design matrices related to the fixed effects, direct additive genetic effects, maternal additive genetic effects and maternal permanent environmental effects to vector y.
Animal additive genetic effects considering pedigree relationship and residual errors were assumed with random effects.
Heredity of economic and reproductive traits in living organisms results from genetic and environmental factors, with maternal and direct additive genetic effects being of great importance among the genetic factors.
3] are corresponding design matrices associating the fixed effects, direct additive genetic effects, maternal additive genetic effects and maternal permanent environmental effects to vector of y.
Q] are the matrices of coefficients of the covariance function for direct and maternal additive genetic effects and animal and maternal permanent environmental effects, respectively.
By ignoring or including maternal additive genetic effects and maternal permanent environmental effects, five different models were fitted for each trait.
The analysis model included breed, collector and year-season as fixed effects; additive genetic effects, permanent environmental effect of boar and measurement error as random effects.
The first eigenvalue of additive genetic effects was responsible for around 88% of total variance, while this value for permanent environmental effect was more than 95% and it seems that the variability of the data for additive genetic and permanent environmental effects was mainly explained by the first two eigenvalues (more than 98%).
pe]: the coefficients matrices which linked fixed effects, direct additive genetic effects, maternal additive genetic effects and maternal permanent environmental effects to the observations, and e: vector of residual effects.
2] generation in this study might be attributed primarily to additive genetic effects, since the variance estimates of this effect were substantially greater than the variance estimates of dominance (Table 2).
Number of grains per row, number of grains per ear and 100-grains weight of maize genotypes studied in current research were found under the control of additive gene action whereas, El-Badawy, (2012) reported the preponderance of additive and additive x additive genetic effects for number of grains per row, number of grains per ear and grain yield.
Genetic variation among different generations was mainly due to additive genetic effects whereas, non-allelic and dominant effects were minimum (Chen et al.