Thursday, December 10, 2020

The Genetics of Eye Color

 DNA provides the genes that are then used by cells to carry out daily functions and interact with the environment. They also coded for our genetic makeup. Scientists have discovered that at least eight different genes influence the color of a person's eyes. Eye color its determined by the amount of light that reflects off of the iris. The iris is a muscular structure that controls how much light enters the eye. Whether a person's eyes are blue, brown, green, hazel, or you name it, it is passed down through generations of genetic traits. Your parents' genetic makeup determines the amount of pigment in the iris of your eye. All eye colors begin with brown. It is how much brown is in the eye that determines the color and can make it look blue or green. Eye color can try to be predicted, but genetic factors may alter the outcome. Two blue eyed parents could still have a brown eyed child. The vast majority of people in the world have brown eyes.


  1. I think this article is neat. I knew their were multiple genes that controlled eye color, but I didn't know that there were 8 different genes. I also thought it was neat that everyone starts off with brown eyes and the genes determine how much brown is in the eye. Me being browned eyed and my sister being blue eyed while both of my parents are brown eyed.

  2. This article is very informative and interesting. I figure eye genetics was simple, however this article proved it not to be. It's interesting that I come from two brown eyed parents and both me and my two siblings have brown eyes. I didn't know a lot of the facts stated in this article. Very informative!

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