Answer:
The heritability coefficient is a statistic that describes how much of the difference between people's intelligence scores can be explained by differences in their genes.
Explanation:
The heritability is that fraction of the phenotypic variations observed for a characteristic due to the genetic action or genetic variation, that is, the genetic differences that each of the people have or as the coefficient of additive genetics on the phenotypic variance. The heritability coefficient is expressed as a percentage or value from 0 to 1, going from the most absolute absence of hereditary weight of the phenotypic character to the total heritability of it.
Intelligence is a polygenic trait; in which several genes have genetic influence, that is, differences in intelligence coefficients between individuals may be due to genetic factors. So, the heritability; the percentage of its variability in a given population that can be attributed to variation in genes, can explain the difference between people's intelligence scores. Studies suggest, the half of the variation in intelligence test scores among individuals could be attributed to genetic variation.
