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.