| 释义 |
narrow-sense heritability
narrow-sense heritability[¦nar·ō ‚sens ‚her·ə·tə′bil·əd·ē] (genetics) The degree to which individual phenotypes are determined by the genes transmitted from the parents; expressed as the ratio of the additive genetic variance to the total phenotypic variance. narrow-sense heritability
narrow-sense heritability the proportion of variance among PHENOTYPES in a population that can be attributed to additive genetic variance, the latter being the sum of the average effects of all the genes carried in the population that affect a particular character. Narrow sense-HERITABILITY is concerned with how much of a parent's phenotype is inherited by its offspring and often is estimated from the results of selection experiments. Compare BROAD-SENSE HERITABILITY. |