Help make Alexa smarter on Alexa Answers. Sign in with Amazon


Why do we have different eye colors?

Eye colors depend on how much pigment called melanin is in the iris. Brown eyes have a lot of melanin. Other colors depend on how light reflects off an iris with less melanin. How much melanin a person has depends on their DNA. Genes for brown are dominant over genes for other colors.

{{ relativeTimeResolver(1633382946525) }}

Points points 13

Similar Questions
Sign in to view all similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world