Final answer:
Heritability refers to the fraction of phenotype variation that can be attributed to genetic differences among individuals in a population. It measures the extent to which genetics contribute to the variation in a trait. Higher heritability implies that genetic factors have a greater influence on the trait compared to the environment.
Step-by-step explanation:
Heritability refers to the fraction of phenotype variation that can be attributed to genetic differences among individuals in a population. It measures the extent to which genetic factors contribute to the observed variation in a trait. The greater the heritability, the more influence genetics have on the trait compared to environmental factors. For example, if heritability of height is high, it means that genetic differences between individuals play a significant role in determining their height.