Reversion is a concept in finance and statistics that refers to the tendency of a variable to return to its average or mean value over time. For example, if a stock's price rises significantly above its historical average, it may eventually decrease back toward that average. This principle is often used in investment strategies to predict future price movements. In the context of genetics, reversion can describe the process where a mutated gene returns to its original state. This can occur naturally or through experimental methods. Understanding reversion helps researchers study genetic stability and the effects of mutations on organisms.