There's a little genetic tweak that makes the combination of red hair and blue eyes the rarest of them all. The same Nature study mentioned above found that another gene variant, HERC2, interacts with both the MC1R gene and the OCA2 gene—and it can shut off the redhead gene while expressing blue eyes and blonde hair.
Red is the rarest hair color, and green is the rarest color for the eye. These two factors together make red hair and green eyes the second rarest combination. What is this? Red hair is caused by a recessive gene, while green eye color is recessive to brown but dominant to blue.
TIL The rarest natural hair color in the world is red, with only 1-2% of the world population having natural red hair.
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 1-2 per cent having red hair, the odds of having both traits are around 0.17 per cent.
The title of rarest hair colour/eye colour combination belongs to red haired folks with blue eyes. According to Medical Daily, both the blue eye trait and the red hair trait are recessive, so their likelihood of simultaneous appearance is pretty slim. Just ask anyone who's pieced together a Punnett Square.
We found that green is the most popular lens colour, with brown coming in a close second, despite it being one of the most common eye colours. Although blue and hazel are seen as the most attractive eye colours for men and women they are surprisingly the least popular.
'It's extremely rare for people to have hair that is naturally a strawberry blonde color. Basically, strawberry blonde is mostly based on red tones, with blonde highlights dotted here and there. It takes its name from the Italian renaissance.
Redheads probably won't go grey. That's because the pigment just fades over time. So they will probably go blonde and even white, but not grey.
Rarest kind of redhead
Having red hair and blue eyes is the rarest hair/eye color combination possible. The odds of a person having both of those recessive traits is around 0.17%. Instead, most redheads have brown, hazel or green eyes, according to Medical Daily.
Black hair and blue eyes is a much more rare combination than is blonde hair and blue eyes. The reason why these two traits are linked is that the genes responsible for hair and eye color happen to be close together on the same chromosomes.
Blue is one of the rarest of colors in nature. Even the few animals and plants that appear blue don't actually contain the color. These vibrant blue organisms have developed some unique features that use the physics of light.
Black hair is the darkest and most common of all human hair colors globally, due to larger populations with this dominant trait. It is a dominant genetic trait, and it is found in people of all backgrounds and ethnicities.
Red is the rarest hair color, according to Dr. Kaplan, and that's because so few MC1R variants are associated with the shade. “Only three variants are associated with red hair,” she says. “If a person has two of these three variants, they almost certainly have red hair.
Close to 3% of the world's population have gray eyes. People with gray eyes have little or no melanin in their irises, but they have more collagen in a part of the eye called the stroma. The light scatters off the collagen in a way that makes the eyes appear gray.
Only 8 Percent of the World's Population Has Blue Eyes
Since blue eyes are genetically recessive, only 8 percent of the world's population has blue eyes. While blue eyes are significantly less common than brown eyes worldwide, they are frequently found from nationalities located near the Baltic Sea in northern Europe.
Because blond hair tends to turn brown with age, natural blond hair is significantly less common in adulthood; according to the sociologist Christie Davies, only around five percent of adults in Europe and North America are naturally blond.
A redhead of African descent is pretty rare. Except when people are of mixed ancestry, red hair in Africans is usually caused by a kind of albinism. When people think of albinism, they may picture people with white hair, pale skin and pink eyes.
While redheads are born all throughout the world, they're more likely to crop up in the Northern hemisphere. Though about 1-2% of the general world population has the red hair gene, that percentage rises to 2 to 6 percent north of the equator.
gingerphobia (uncountable) (UK, informal) Fear, dislike, or hatred of people with red hair.
The skin of a redhead is thinner compared to others and is derived from the ectoderm. Teeth enamel is also derived from the ectoderm and thus is thinner than usual. Since the enamel coating is thin, the inner layer of tooth-dentin is more visible and offers a yellowish appearance.
And the statistics bear that stereotype out. Ireland has the highest per capita percentage of redheads in the world -- anywhere from 10 to 30 percent, according to Eupedia, a website that explores European genetics and ancestry. They are almost equally prevalent in Scotland and other pockets of Celtic pride.
No, no one has pink hair at birth. Pink is not a natural color for hair anywhere.
Less than 2% of the world's population have red hair
That's approximately 140 million people. Scotland boasts the highest percentage of natural redheads, with 13% (40% might carry the gene there) while Ireland comes in second with 10%.
Dirty blonde is unlike your typical squeaky clean blonde shades like platinum and champagne. The hue is a medium to dark blonde shade with wheaty, brown undertones (hence, the word dirt in the name). These hints of brunette make dirty blonde dimensional and low-maintenance—what more could you want?