Red hair is a recessive trait, which is why less than 2% of the population are natural redheads. This is also why red hair may skip one or more generations in a family. Did you know a lot of redheads actually carry other recessive traits as well? We also have what are called dominant traits. Dominant genes always pass the dominant behavior genes and are said to be more likely to pass to future generations, while the recessive ones are less likely to do that. So, you can see why it's extremely rare to have recessive traits -- like red