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.
Redheads, as they say, wear the map of Ireland all over their faces. Sorry, ginger-haired English Prince Harry. Ireland has the highest per capita percentage of redheads in the world -- anywhere from 10 to 30 percent, according to Eupediaa website that explores European genetics and ancestry.
Redheads have a particularly high abundance of pheomelanin, with very little eumelanin, which ranges from brown to black. When it's activated, it causes melanocytes to specifically produce eumelanin over phenomelanin, which balances out an individual's ratio. Contrastingly, redheads are born with a genetic variant that causes MC1R to chemically function differently on melanocytes, which leads to less eumelanin and more pheomelanin production.
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.
Brown eyes, hazel eyes, green eyes, blue eyes — these are the standard shades for the windows to our soul. But what hair color most typically accompanies each eye color? According to Medical Dailythe most unlikely pairing is red hair and blue eyes.
It is the rarest hair color in the world. All redheads do not have blue eyes. Blue and red combination is rather rare, a common combination with red hair are brown eyes.
February 7, For every people in the world, only one or two will have red hair. And when you meet a red head with blue eyesyou are looking at the rarest colour combination of all for human beings.
Welcome back! If you have saved your information by registering at americangirl. Please use the email associated with your account.
Redheads get a a lot of grief. Or, at least, they seem to be the butt of quite a few jokes. But this is silly because redheads are super cool.