Eye color is directly related to the amount of melanin in the front layers of the iris. People with brown eyes have a large amount of melanin in the iris, while people with blue eyes have much less of this pigment. A particular region on chromosome 15 plays a major role in eye color.
Brown Eyes: The most common trait associated with brown-eyed people is intelligence, with 34 percent of the respondents choosing this trait. Trustworthiness (16 percent) and kindness (13 percent) were other traits associated with the most common eye color.
Brown eyes result from a relatively high concentration of melanin in the stroma of the iris, which causes light of both shorter and longer wavelengths to be absorbed. Dark brown eyes are dominant in humans. In many parts of the world, it is nearly the only iris color present.
It is possible for two blue-eyed parents to have a brown-eyed child. Blue eye color is recessive while brown eye color is dominant. So, if the gene for brown eye color is present in the parents' DNA, then it is possible for their child to have brown eyes.
Benefits of Brown Eyes
Brown eyes may provide greater protection against certain eye diseases. According to the American Academy of Ophthalmology, this may be due to the higher levels of melanin. People with brown eyes tend to be at lower risk for eye cancer, macular degeneration, and diabetic retinopathy.
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.
One of the study's main findings was that gray eyes are both the rarest and the statistically most attractive eye color, with hazel and green following closely behind. Conversely, brown eyes are the most common color yet the least attractive to the survey's respondents.
Your children inherit their eye colors from you and your partner. It's a combination of mom and dad's eye colors – generally, the color is determined by this mix and whether the genes are dominant or recessive. Every child carries two copies of every gene – one comes from mom, and the other comes from dad.
Brown eyes are the most common: Over half the people in the world have them, according to the AAO. In fact, about 10,000 years ago, all humans had brown eyes.
Blue shades (like electric blue or night blue) to deepen your brown eyes and make them stand out, Green hues for a unique, luscious makeup look, Gold and copper to brighten your eyes.
The bey2 gene has one allele for brown eyes and one for blue eyes. The allele for brown eyes is the most dominant allele and is always dominant over the other two alleles and the allele for green eyes is always dominant over the allele for blue eyes, which is always recessive.
“Can two parents with blue eyes have a child with brown eyes?” Yes, blue-eyed parents can definitely have a child with brown eyes.
Brown eyes are more resistant to problems because they have more melanin. It also helps to repair DNA damage and to keep the eyes moist. People with brown eyes are also less likely to develop certain types of eye diseases, such as age-related macular degeneration.
Those with darker colored eyes experience less visual discomfort in bright, sunny conditions. Also, darker irises reflect less light within the eye, reducing susceptibility to glare and improving contrast discernment—so people with darker eyes may have better vision in high-glare situations, such as driving at night.
Eye colour, or more correctly iris colour, is often used as an example for teaching Mendelian genetics, with brown being dominant and blue being recessive.
What is the rarest eye color? Green is the rarest eye color in the world, with only 2% of the world's population (and fewer than one out of ten Americans) sporting green peepers, according to the American Academy of Ophthalmology (AAO).
All men inherit a Y chromosome from their father, which means all traits that are only found on the Y chromosome come from dad, not mom. The Supporting Evidence: Y-linked traits follow a clear paternal lineage.
Unlike nuclear DNA, which comes from both parents, mitochondrial DNA comes only from the mother.
You might also notice that people with brown hair typically have brown eyes. Skin color also often fits in this trend: people with lighter hair and skin often have light eyes.
There's a little genetic tweak that makes the combination of red hair and blue eyes the rarest of them all.
Can Sun Exposure Affect Eye Color? Sun exposure can cause your eyes to produce more melanin, resulting in slightly darker eye color. However, the sun cannot dramatically change the color of your eyes. This melanin production appears as small brown spots on the iris.
And what would you think is the most attractive eye color? In a website poll of over 66,000 respondents, 20% said green was the most attractive, followed by hazel and light blue at 16%. Brown was far and away voted the least attractive (6%).
Brown Eyes
Well, consider yourself lucky – or maybe unlucky – because you have the most common eye color in the world! Being one of the popular kids isn't the only benefit of brown eyes, some studies have actually suggested that men with brown eyes seem more trustworthy than their blue eyed counterparts.