Description of Quantitative Traits
Genetic and Environmental Effects Quantitative Traits Statistics Estimating Offspring Phenotype Quantitative Genetics Overheads 
Estimating the Offspring PhenotypeIf we have determined the narrow sense heritability of a trait and know several population values we can estimate the phenotypic value for an offspring. The following formula can be used for the prediction.
T_{o} = T + h^{2}(T*T) where
T_{o} = predicted offspring phenotype Let's use the following information to estimate the offspring phenotype
T = 80 seeds/plant Then:
T_{o} = 80 + 0.5 (10580) The conclusion that we can draw is not that each plant in the next generation will have 92.5 seeds/plant, but rather that on average the population derived from mating these two parents will have 92.5 seeds/plant. Remember that quantitative traits are affected by the environment, and the environment will be responsible for the deviations that we would see from the estimated phenotype. Copyright © 1997,1999. Phillip McClean
