What is the best definition of heritability?
A) the amount of an individual's phenotype that is due to genetic influences
B) the proportion of traits in an individual that is not influenced by environmental variables
C) the amount that a trait varies in a population that is due to genetics
D) the likelihood that a parent will pass on a particular trait to his or her offspring

Question

Quizplus · Accepted Answer

Heritability is the proportion of variation in a trait that is due to genetic differences among individuals in a population. It is a statistical measure that ranges from 0 to 1. A heritability of 1 indicates that all the variation in a trait is due to genetic differences, while a heritability of 0 indicates that all the variation is due to environmental differences.

Note: While A and B are partly correct, they are not complete definitions of heritability. Heritability takes into account both genetic and environmental factors, and measures the relative contributions of each to the variation in a trait. D is also partly correct, but it only deals with the transmission of a trait from parents to offspring, and not with the overall variation in the trait within a population.

What Is the Best Definition of Heritability