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  2. en.wikipedia.org › wiki › Eye_colorEye color - Wikipedia

    [8] The genetics and inheritance of eye color in humans is complicated. As of 2010, as many as 16 genes have been associated with eye color inheritance. Some of the eye-color genes include OCA2 and HERC2. [9] The earlier belief that blue eye color is a simple recessive trait has been shown to be incorrect.

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  3. en.wikipedia.org › wiki › BlueBlue - Wikipedia

    The term blue generally describes colors perceived by humans observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet.

    • (240°, 100%, 100%)
    • approx. 450–495 nm
  4. The view that blue eye color is a simple recessive trait is incorrect. Two main gene loci code for the eye pigment: OCA2 and HERC2. They sit next to each other on chromosome 15. Mutations to these genes account for much of the variation seen in eye color. OCA2 mutations close to the 5′ regulatory region explain most human eye-color variation.

  5. Heterochromia iridum Heterochromia is a variation in coloration most often used to describe color differences of the iris, but can also be applied to color variation of hair [1] or skin. Heterochromia is determined by the production, delivery, and concentration of melanin (a pigment ).

    • Lifelong
    • Iris implant surgery (controversial for cosmetic purposes)
    • Different or partially different eye color
    • Ophthalmology
    • All blue-eyed people may have a common ancestor. It appears that a genetic mutation in a single individual in Europe 6,000 to 10,000 years ago led to the development of blue eyes, according to researchers at the University of Copenhagen.
    • Blue eyes don't have blue pigment. As mentioned above, blue eye colour is determined by something called melanin. Melanin is a brown pigment that controls the colour of our skin, eyes and hair.
    • You can't predict the colour of your child's eyes. At one time, it was believed that eye colour — including blue eyes — was a simple genetic trait, and therefore you could predict a child's eye colour if you knew the colour of the parents' eyes and perhaps the colour of the grandparents' eyes.
    • Blue eyes at birth doesn't mean blue eyes for life. The human eye does not have its full adult amount of pigment at birth. Because of this, many babies have blue eyes, but their eye colour changes as the eye develops during early childhood and more melanin is produced in the iris.
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