quantitative genetics

(redirected from Polygenic trait)
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Related to Polygenic trait: quantitative inheritance, Polygenic inheritance

quantitative genetics

n. (used with a sing. verb)
The study of the effects that heredity and environment have on traits that can be quantitatively measured, such as size.
References in periodicals archive ?
Fresh storage root yield variation due to genotype was higher than environmental influence at 6 MAP, had an equal contribution at 9 MAP and was lower at 12 MAP which suggests that yield is a complex polygenic trait influenced by both genotype and environment.
An example of a polygenic trait is human skin colour variation.
It may be believed to be due to heritable autosomal recessive and polygenic trait.
Underlying reason for that is quite clear from the investigator's point of view: schizophrenia is a complex polygenic trait with significant influence of non-genetic environmental factors.
Successful directional selection for any polygenic trait can lead to a reduction of genetic diversity, as favorable genetic combinations are fixed in the breeding population.
c) A polygenic trait may have several different phenotypes and genotypes.
Since human susceptibility to tuberculosis is a complicated polygenic trait, interactive effects between the polymorphism studied and other SNPs in human genes (including those in IFN-[gamma] network), need to be evaluated.
Seed yield in soybean is a polygenic trait, which could be greatly affected by recombination.
Such a polygenic trait would be more difficult to select.
Students must explore and experiment with a dominant/recessive trait (horns), a co-dominant trait (legs), and a sex-linked, polygenic trait (color).
However, egg productivity is inherited as a polygenic trait, with low to moderate heritability, making the level of genetic improvements difficult to estimate (Luo et al.