![]() But that proportion varies according to the geographical area. 80% of people in the world have brown eyes. For example, if both parents have brown eyes, the likelihood of the children having a similar eye colour is above 70%. It is determined by a series of genes, which people get from their parents. What determines the quantity of melanin?Įye colour is hereditary. Some people have blue eyes with some grey in them, while others have greenish-brown irises, better known as hazel. Countries with the most blue-eyed people.In other words, the higher the melanin content, the darker the eyes. A global view of the OCA2-HERC2 region and pigmentation. Eye color as a risk factor for acquired sensorineural hearing loss: A review. Mujica-Mota MA, Schermbrucker J, Daniel SJ. Blue eyes as a risk factor for type 1 diabetes. ![]() doi:10.1007/s0026-xĭi Stasio E, Maggi D, Berardesca E, et al. ![]() The blue-eyes stereotype: do eye color, pupil diameter, and scleral color affect attractiveness? Aesth Plast Surg. Gründl M, Knoll S, Eisenmann-Klein M, Prantl L. Is eye color determined by genetics?Ĭenters for Disease Control and Prevention.
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