{"id":12425,"date":"2025-11-13T15:18:40","date_gmt":"2025-11-13T20:18:40","guid":{"rendered":"https:\/\/www.eyebuydirect.com\/blog\/?p=12425"},"modified":"2025-11-12T09:51:17","modified_gmt":"2025-11-12T14:51:17","slug":"brown-eyes-facts-about-the-most-common-eye-color","status":"publish","type":"post","link":"https:\/\/www.eyebuydirect.com\/blog\/brown-eyes-facts-about-the-most-common-eye-color\/","title":{"rendered":"Brown Eyes: The World\u2019s Most Common and Dominant Eye Color"},"content":{"rendered":"

Brown eyes are the most common eye color in the world, worn by an estimated 70<\/span>–<\/span>80% of the global population. Far from being ordinary, this deep, rich color is genetically dominant and comes with several unique advantages, including protection against harsh sunlight and a lower<\/span> risk for certain eye diseases.<\/span><\/span><\/p>\n

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Are Brown Eyes Dominant?<\/span><\/h2>\n

Yes, brown eyes are dominant, in the sense that varying shades of brown eyes are the most common eye color. Genetics also make them the most common eye color.<\/span><\/p>\n

When comparing the genes that determine eye color, the gene for brown eye color is always the dominant trait over the gene for blue or green eyes.<\/span><\/p>\n

\"An<\/p>\n

What Causes Brown Eyes?<\/span><\/span><\/h2>\n

To put it simply, brown eyes are caused by genes that are passed from biological parents. Genes make up a part of your DNA that work as instructions to determine your makeup as a human. DNA and all the genes within it are housed within chromosomes.<\/span><\/p>\n

Every eye color results from a melanin combination produced in the iris (the colored part of the eye). Melanin is a substance in the body that gives it pigmentation. It\u2019s produced by cells called melanocytes.<\/span><\/p>\n

While all humans have the same number of melanocytes, the amount of melanin they produce varies. For example, a person who produces more melanin will have darker skin,\u00a0eye, and hair color,\u00a0whereas\u00a0someone who produces less melanin will have lighter features.<\/span><\/p>\n

The level of melanin reflected in the iris \u2014 that ultimately determines eye color \u2014 is controlled by two main genes:<\/span><\/p>\n