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Related to broad-sense heritability: selection differential
broad-sense heritabilitythe widest estimate of the role of genes in influencing total phenotypic variability (see HERITABILITY), measured by the ratio of total genotypic variance to total phenotypic variance. Compare NARROW-SENSE HERITABILITY.
1. the proportion of total variation in the population that can be attributed to variation in genetic factors.
2. the degree to which inheritance plays a part in the etiology of a disease.
the degree to which a trait is genetically determined, expressed as the ratio of the total genetic variance to the phenotypic variance (VG/VP).
narrow sense heritability
the degree to which a trait is passed from parent to offspring expressed as the ratio of the additive genetic variance to the total phenotypic variance (VA/VP).