And when you meet a red head with blue eyes, you are looking at the rarest colour combination of all for human beings. Around 17 per cent of people have blue eyes, and when combined with per cent having red hair, the odds of having both traits are around 0. The reason these looks are so unusual is because they are the result of two different sets of DNA instructions, or mutations, happening in the same person, explains Professor Mark Elgar, an evolutionary biologist from the University of Melbourne. In contrast, brown hair and brown eyes are dominant traits, which is why they are much more prevalent. In some regions of the world, red heads are more common, making up per cent of the population in Scotland and Ireland for example. Blue-eyed people are also more common in the Baltic regions of Northern Europe. Red hair originates from mutations in a gene involved in skin and hair pigmentation, called melanocortin 1 receptor MC1R on chromosome
Around 17 per cent of people have blue eyes, and when combined with per cent having red hair, the odds of having both traits are around. The likelihood of this happening is quite rare, especially if neither of your parents has red hair or blue eyes. Sometimes, however, the genetic stars align, and individuals are born with the rare combination of red hair and blue eyes. For example, two brown-haired, brown-eyed.
It is generally believed that all human beings share approximately 98 percent of their genetic makeup. Over the centuries though, DNA has evolved, changed and mutated, so some of us bear little similarities to our ancestors in regard to things like physical features and height. Even though many people go to great lengths to appear like everybody else, we almost all have something that makes us different from the next person.
Smutty Eyes, Burgundy Pelt as a consequence Last Hereditary Mutations via Our DNA
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