These genes determine whether a person's eyes are brown or blue. For example, in most cases, a person's eye color is determined by two genes. There are two main types of genes: dominant and recessive. Interesting Facts about How Genes Determine Your Eye Color But if eye color comes from our parents, what happens when our mother and father have different eye colors? Why do some children have different eye colors than either parent? Even twins often have different eye colors and patterns. Not everyone’s genes code for the same level of melanin, which is why hair, skin, and eye colors have so many variations. Your genes do this by dictating the placement and concentration of melanin, which gives hair, skin, and eyes their color and saturation. Your eye color comes from the genetic traits your parents passed down to you. When you’re trying to see in the dark, the iris expands to allow every scrap of available light into the pupil. When exposed to bright light, the iris contracts, blocking some of the light from entering. The iris contains a pigment called melanin, which makes it opaque and protects the pupil from excess light. This muscle determines how much light enters your eye. There’s a muscle in your eye called the iris, named after the Olympian god of rainbows and color. The more melanin you have, the more likely it will be for your genes to produce dark colors. The genes involved in deciding your eye color primarily determine the strength and placement of melanin, the pigment responsible for hair, skin, and eye color. Our genes determine your eye color, passed down from your parents and possibly even skipping a few generations. Beliefs about eye color range from determining someone’s personality to indicating that a person is evil. Of course, all eyes are unique, and no two people have the same patterns and colors, but do these colors hold a deeper meaning? Almost all cultures believe so to some extent. They are one of the most distinctive features a person has. Often, you can tell how someone is feeling and what they think just by looking into their eyes. A person's eyes are said to be the windows to the soul.
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