the proportion of variability of a character due to heredity, the remainder being due to environment —note 1. high heritability indicates that an individual phenotype is indicative of its genotype —note 2. if calculated from parent-progeny data, heritability estimates the degree of resemblance between parent and progeny —see breeding value, broad-sense heritability, clonal test, genetic gain, genotype, narrow sense heritabilityThis definition last updated 10/28/2008