Researchers used to think that eye color was determined by a single gene and followed a simple inheritance pattern in which brown eyes were dominant to blue eyes. However, later studies showed that this model was too simplistic. The inheritance of eye color is more complex than originally suspected because multiple genes are involved. Most of the genes associated with eye color are involved in the production, transport, or storage of the pigment melanin. Eye color is directly related to the amount and quality of melanin in the front layers of the iris. People with brown eyes have a large amount of melanin in the iris, while people with blue eyes have much less.
The content contained on this website is for informational purposes only. The content is not intended to be a substitute for professional advice. Reliance on any information provided in this article is solely at your own risk.