The study identifies 50 new genes that play a role in eye color compared to the two mentioned above

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More than it looks! The study identifies 50 new genes that play a role in iris coloration compared to what has been said above to determine different shades

  • One study has identified 50 new genes involved in determining human eye color
  • The researcher conducted the analysis with about 195,000 Europeans and Asians
  • It was previously thought that only one or two genes were involved
  • However, many of the new genes were not reported to determine eye color

By Stacy Liberator for Dailymail.com

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A new study reveals that the color of human eyes is much more complex than previously thought.

A group of international scientists have identified 50 new genes that play a role in eye color after genetic analysis of nearly 195,000 people in Europe and Asia.

It was previously said that shadows were controlled by one or two genes, with brown eyes normally dominating blue.

The team also discovered 1,636 Asian participants with different shades of brown eyes who exhibited iris pigmentation variations similar to Europeans who have a wider range, from dark brown to light blue.

“The results of our study show that the genetic complexity of human eye color far exceeds previous knowledge and expectations, highlighting eye color as a genetically highly complex human trait,” says the study published in Science Advances.

A group of international scientists have identified 50 new genes that play a role in eye color after genetic analysis of nearly 195,000 people in Europe and Asia. It was previously said that shadows were controlled by one or two genes, with brown eyes normally dominating the blue.

A group of international scientists have identified 50 new genes that play a role in eye color after genetic analysis of nearly 195,000 people in Europe and Asia. It was previously said that shadows were controlled by one or two genes, with brown eyes normally dominating the blue.

The study, led by King’s College London and Erasmus University Medical Center Rotterdam, is considered “the largest genetic study of its kind to date.”

Dr. Manfred Kayser, co-lead author at the Erasmus University Medical Center in Rotterdam, said: “This study provides the genetic knowledge needed to improve the prediction of eye color from DNA, already applied in anthropological studies and forensic, but with limited accuracy for non-browns and non-blue eye colors. “

The 50 new genes had been previously identified, but were not classified as having a role in eye color.

For example, the team found that eight of the genes reported genetic associations with other pigmentary traits, such as hair color and skin.

These results will help improve the understanding of eye diseases such as pigmentary glaucoma and eye albinism, where eye pigment levels play an important role.

These results will help improve the understanding of eye diseases such as pigmentary glaucoma and eye albinism, where eye pigment levels play an important role.

“In addition, we also identified 34 genetic loci that were significantly associated with eye color, but for which there is no report of significant association with hair and / or skin color,” the researchers state.

These findings will help improve understanding of eye diseases such as pigmentary glaucoma and eye albinism, where eye pigment levels play an important role.

Dr. Pirro Hysi, author of King, said: “The findings are exciting because they bring us one step closer to understanding the genes that cause one of the most amazing features of human faces, which has baffled generations over of our history. ‘

“This will improve our understanding of many diseases that we know are associated with specific levels of pigmentation.”

The color of our eyes has always been a mysterious wonder and is usually a surprise at birth.

However, new technologies allow humans to choose the tone of babies ’eyes, along with other skills and characteristics.

Scientists in China are already using a form of gene editing called CRISPR to alter disease-causing genetic mutations in human embryos.

And a 2018 study found that 39% of people would alter their child’s DNA to be born to select eye color.

ON THE BLINDNESS OF COLOR

About one in 20 people suffers from color blindness, a condition that makes the world a more boring place to look.

According to the NHS, it affects 1 in 200 women in the world and 1 in 12 men.

There are four types of color blindness known as protanopia, dueteranopia, tritanopia, and achromatopsia.

Protanopia

Protanopia involves defective or absent long-wavelength cones in the retina; these photoreceptor cones are responsible for the perception of red light. Protans find it difficult to distinguish between red and green, and also between blue and green.

Deuteranopia

Deuteranopia is a condition that lacks the green cone of the photoreceptor in the retina. As a result, it is much more difficult for deutans to distinguish green from red, as well as some grays, purples, and a greenish blue. Along with protanopia, this is one of the most common forms of color blindness.

tritanopsia

Tritanopia is a total lack of short-wavelength cones in the retina that receive blue light. People with this very rare form of color blindness confuse light blue with grays, dark purples with black, medium greens with blues, and oranges with reds.

Achromatopsia

People with total achromatopsia cannot perceive any color and can only observe the world in black and white and in shades of gray.

The retina of the eye has two types of light-sensitive cells; rods and cones.

Both are located in the back layer of the eye that processes the images.

The rods work in low light conditions, but the cones work in daylight and are responsible for the color. People who have color blindness have a problem with the cones of the retina.

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