Final answer:
Heritability is the measure of phenotypic variation in a group that is due to genetic variance, and the statement is true. It reflects the extent to which genetic differences contribute to individual differences in a trait observed within a population.
Step-by-step explanation:
The statement that 'The amount of phenotypic variation in a group that is due to genetic variation is called heritability' is True. Heritability is a measure of how much of the variation in a trait within a population is due to genetic factors as opposed to environmental factors. High heritability means that much of the variation in a trait, from one individual to the next, is the result of differences in genetics. It is important to remember that while heritability does have a significant genetic component, it doesn't mean a trait is determined solely by genes; environmental factors can also have a strong influence on the expression of traits.