quantitative trait

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quantitative trait

A phenotype that varies in quantity, such as height or number of bristles.


pertaining to observations of a numerical kind, e.g. 50 kg, 2 m, 24 hands.

quantitative characters
features of animal productivity or performance which can be measured quantitatively.
quantitative data
numerical data.
quantitative inheritance
genetic transmission of phenotypes which are quantitative and continuous.
quantitative trait
see quantitative trait.


1. any genetically determined condition; also, the condition prevailing in the heterozygous state of a recessive disorder.
2. a distinctive behavior pattern.

trait A-46
see inherited parakeratosis.
qualitative trait
a characteristic that is expressed only in descriptive terms, e.g. fine bone, deep chest.
quantitative trait
a characteristic that is expressed mathematically, e.g. an annual yield of milk of 15,000 lb.
sex-linked trait
the gene for the trait is located on the chromosomes which determine the sex of the individual.
References in periodicals archive ?
Variance component analysis of quantitative trait loci for pork carcass composition and meat quality on SSC4 and SSC11.
Quantitative trait locus mapping for acute functional tolerance to ethanol in the L x S recombinant inbred panel.
Quantitative trait loci mapping in an F2 DurocxPietrain resource population: I.
Quantitative trait loci affecting initial sensitivity and acute functional tolerance to ethanol-induced ataxia and brain cAMP signaling in BXD recombinant inbred mice.
Quantitative trait loci affecting growth and carcass composition of cattle segregating alternate forms of myostatin.
Confirmation of provisional quantitative trait loci for voluntary alcohol consumption: Genetic analysis in chromosome substitution strains and F2 crosses derived from A/J and C57BL/6J progenitors.
Further characterization and high-resolution mapping of quantitative trait loci for ethanol-induced locomotor activity.
Detection of quantitative trait loci affecting milk production, health, and reproductive traits in Holstein cattle.
Quantitative trait locus (QTL): A DNA region that is associated with a quantitative trait and which may contain one or more of the genes contributing to variation in that trait.
Williams says, "Aflatoxin accumulation is highly sensitive to environmental variations, and resistance is a highly quantitative trait, meaning that it's controlled by multiple genes.
Researchers from around the world working in the field and related disciplines discuss the roles of proteolysis in plant self- incompatibility, the epigenetic regulation of transposable elements in plants, proteins and interactions, expression quantitative trait loci analysis, plants' sensing and responding to excess light, phloem transport, cellulosic biofuels, jasmonate action, selaginella, the circadian system in higher plants, photorespiratory metabolism, environmental effects on the spatial and temporal patterns of leaf and root growth, genetically engineered plants and foods, and other topics.
KEY WORDS: Genetic theory of alcohol and other drug use; genetics and heredity; behavioral phenotypes, genetic trait, quantitative traits; quantitative trait locus (QTL), QTL mapping; congenics; interval-specific congenics (ISCs); congenic strains; animal models

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