Genetic variance

Genetic variance refers to the differences in traits among individuals in a population that are due to variation in their genes. These genetic differences arise from mutations, gene combinations, and inheritance, leading to diversity in characteristics like height, eye color, or disease resistance. This variance is a key component of evolution, as it provides the raw material for natural selection to act upon. Understanding genetic variance helps scientists study how populations adapt over time and how certain traits become more common or rare within a group.