heritability


heritability
1. In psychometrics, a statistical term used to denote the extent of variance of an individual's total score or response that is attributable to a presumed genetic component, in contrast to an acquired component. 2. In genetics, a statistical term used to denote the proportion of phenotypic variance due to variance in genotypes that is genetically determined, denoted by the traditional symbol h2. [see heredity]
- h. in the broad sense the proportion of the total phenotypic variance that can be ascribed to genetic factors of any kind (additive, those due to dominance effects, epistasis and hypostasis, and interactions of all kinds).
- h. in the narrow sense the proportion of the total phenotypic variance that can be ascribed to additive genetic variance alone. It reflects the similarity between parent and offspring, and is related to the commercial breeding value.

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her·i·ta·bil·i·ty .her-ət-ə-'bil-ət-ē n, pl -ties
1) the quality or state of being heritable
2) the proportion of observed variation in a particular trait (as intelligence) that can be attributed to inherited genetic factors in contrast to environmental ones

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her·i·ta·bil·i·ty (her″ĭ-tə-bilґĭ-te) 1. the quality of being heritable. 2. a measure of the extent to which a phenotype is influenced by the genotype.

Medical dictionary. 2011.

Look at other dictionaries:

  • Heritability — is the proportion of phenotypic variation in a population that is due to genetic variation between individuals. Phenotypic variation among individuals may be due to genetic, environmental factors, and/or random chance[1]. Heritability analyzes… …   Wikipedia

  • Heritability — Her it*a*bil i*ty, n. The state of being heritable. [1913 Webster] …   The Collaborative International Dictionary of English

  • heritability — heritability. См. наследуемость. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • Heritability of IQ — Study of the heritability of IQ is a controversial field of research that includes biology, psychology, philosophy, sociology and anthropology. Heritability is a measure of the contribution of genes to the variation of a phenotype on a given… …   Wikipedia

  • heritability — The degree to which a given trait is controlled by inheritance, as opposed to being controlled by non genetic factors. See: broad sense heritability; narrow sense heritability …   Glossary of Biotechnology

  • heritability — heritable ► ADJECTIVE ▪ able to be inherited. DERIVATIVES heritability noun heritably adverb …   English terms dictionary

  • heritability — noun Date: 1832 1. the quality or state of being heritable 2. the proportion of observed variation in a particular trait (as height) that can be attributed to inherited genetic factors in contrast to environmental ones …   New Collegiate Dictionary

  • heritability — See heritable. * * * …   Universalium

  • heritability — noun a) The condition of being inheritable b) The ratio of the genetic variance of a population to its phenotypic variance; i.e. the proportion of variability that is genetic in origin …   Wiktionary

  • heritability — n. quality of being heritable; transference by inheritance; transferal by heredity …   English contemporary dictionary