Heritability

Heritability is a measure of how much of the variation in a trait within a population is caused by genetic differences rather than environmental factors. For example, if a trait like height has high heritability, it means that differences in height between people are largely due to their genes, while low heritability would indicate that environmental factors like nutrition play a bigger role. It's important to remember that heritability describes a population at a specific time and place, not individuals—saying something is "highly heritable" doesn't mean it's unchangeable or the same across all groups and environments.