Both red hair and blue eyes are recessive traits, so getting two at once makes a person pretty darn unique. And while having blue eyes may be rare, if you’ve got red hair and blue eyes, you’re about as anomalous as they come. We’ll probably all be just fine if blue eyes become more even rarer, or disappear altogether over time. Researchers at Loyola University Chicago found that, between 19, the number of blue-eyed Caucasian babies in the United States dropped 25 percent.īut they also found no link between having blue eyes and overall survival rates. Eye color actually refers to the color of the iris, a ring of tissue that surrounds the pupil. The color and intensity of gray eyes varies from person to person and can include dark gray, gray-green and gray-blue. While blue eyes turn up more frequently in certain geographical areas-Finland and Estonia are thought to have nearly 90 percent blue-eyed populations, for instance-in the United States, the number of blue-eyed babies is shrinking. Gray eye color is one of the loveliest and most uncommon, a trait shared by only 3 of the world’s population. In fact, a 2008 study published in the journal Human Genetics suggests that every blue-eyed person is descended from a single ancestor who first exhibited this unique genetic mutation. many babies are born with blue eyes that darken within the first 3 years of life. That’s 13 million people, out of the 7.6 billion on Earth. Scientists have discovered that a genetic mutation on the OCA2 gene changes the body’s pigment production, creating blue eyes. Less than 200,000 people in the United States have heterochromia. 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. Some people develop heterochromia later in life, however.The way blue eyes develop is even rarer than the eye color itself, however. So it doesn’t require any type of treatment or diagnosis. In most cases, it’s a benign condition not caused by an eye disease, nor does it affect vision. It can appear in someone with no family history of heterochromia. The exact cause of this variation is unknown.Ĭentral heterochromia often occurs sporadically at birth. This variation causes different colors in different parts of your eye. Note: Our eyes color is due to the color of the eyes iris, which is used to block the entrance of excess light into the. There is 75 to 95 chance of the baby getting brown or green eyes if both the parents have same colored eyes. A majority of these people are of European descent, however, Black people can be born with blue eyes even though it’s pretty rare. Now, we’re not mathematicians, but the odds of both occurring simultaneously do seem pretty darn slim Adobe To put it. that 62 percent of individuals with two copies of the blue-eyed OCA2 allele. news Parker Diakite Blue is the second most common eye color globally, with an estimated 8 to 10 of people having blue eyes. Only 1 to 2 of the population has red hair and only 17 have blue eyes. If you have heterochromia, the amount of melanin in your eyes varies. They suggested that brown eye color is always dominant over blue eye color. People with less pigment in their eyes have a lighter eye color than someone with more pigment. A person with fair skin has less melanin than a person with dark skin. Melanin is a pigment that gives human skin and hair their color. Only about 2 percent of the world’s population sport this shade. and 2 of people have blue, hazel, and green eyes, respectively. The answer is green, according to the American Academy of Ophthalmology (AAO). Fifty-five percent of the respondents involved in the report were female, and 45 were male. ![]() The babys eye color will be brown if the parents have brown. ![]() ![]() To understand possible causes of central heterochromia, and heterochromia in general, you need to look at the relationship between melanin and eye color. AARP Bulletin AARP The Magazine At some point, you’ve probably wondered what the rarest eye color is. Because blue is a recessive gene, there is a 100 percent chance that the baby will have blue eyes.
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