quantitative genetics

(redirected from Multigenic trait)
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quan·ti·ta·tive ge·net·ics

the formal study of measurable genetic traits, traditionally but not necessarily confined to galtonian genetics.

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 ?
This find disputes long-held molecular biology notions that such divergent traits only could be controlled by dozens of different genes and that these multigenic traits never could be programmed genetically into a plant.
Mutation-specific allele markers would also enable multigenic traits to be efficiently selected in lines used for backcrossing into elite lines, decreasing the dependence on segregation of poor agronomic traits inherited from the mutated parent line with the desired trait.
A multitude of investigations have been conducted on the inheritance of multigenic traits (using primarily classical biometrical methods), but plant breeders typically have little information on (i) the number of genetic factors (loci) influencing the expression of the traits, (ii) the chromosomal location of these loci, (iii) the relative size of the contribution of individual loci to trait expression, (iv) pleiotropic effects, (vi) epistatic interactions among genetic factors, and (vi) variation of expression of individual factors in different environments.