Final answer:
Heritability is a statistical measure that estimates the extent to which genetic factors contribute to individual differences in a behavior. It is determined by the fraction of phenotype variation that can be attributed to genetic differences in a population.
Step-by-step explanation:
The statistical measure which estimates how much of a behavior is due to genetic factors is called heritability. Heritability is the fraction of phenotype variation that can be attributed to genetic differences among individuals in a population. It is a measure of the extent to which genetic factors contribute to individual differences in a trait or behavior.