![]() ![]() For example, two brown-haired, brown-eyed parents can have a child with blonde hair and blue eyes.īoth parents can display recessive gene characteristics, and they can pass those to their children, too. While they may display the dominant genes, they still have - and can pass to their kids - the recessive genes. Parents can also be carriers for recessive genes. Brown hair and brown eyes, for example, are both dominant, which is why they make up such a large percentage of hair-eye color combinations. Though hair color is influenced by multiple genes, in general, dominant genes win out in a head-to-head matchup against recessive genes. Parents share the blueprint of many features, from hair color to personality, in their genes. Gene characteristics fall into two categories: recessive and dominant. How does someone get red hair and blue eyes Sometimes, however, the genetic stars align, and individuals are born with the rare combination of red hair and blue eyes. The likelihood of this happening is quite rare, especially if neither of your parents has red hair or blue eyes. ![]() You must inherit two sets of genetic information for both your hair color and your eye color to have these less-common characteristics. If one person has both red hair and blue eyes, there’s a good chance one or both of their parents do, too, but not always. Your hair color and eye color come down to what genes you inherit from your parents. Today, estimates suggest about 17 percent of people worldwide have blue eyes. But from 1936 to 1951, that number fell to 33.8 percent. One study found that between 18, more than half of non-Hispanic white people in the United States had blue eyes. Blue eyes are similarly uncommon, and they may be becoming rarer. Red hair, occurring in just 1 to 2 percent of the population, is the least common. In the array of possible natural hair colors, dark hues are the most common - more than 90 percent of people worldwide have brown or black hair. ![]()
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