Only 17% of the world’s population have blue eyes, and only 1 to 2% have red hair. In the array of possible natural hair colors, dark hues are the most common — more than 90 percent of people ...

While most everyone has the same number of melanocytes, some people produce more melanin than others. The more melanin a person produces, the darker their skin, hair and eyes will be.

Both parents must be carriers of the mutated MC1R gene to be able to produce redhead offspring, of which there is a 25% chance if they don't have red ... people with other hair hues. Blue eyes ...