What determines one's eye colour
genetics i suppose
Genetics from your birth mother and birth father, and their parents and their parents and so on.-S-
Genetics, sometimes your parents will have brown eyes but you have blue? it depends on how God makes you.
several genes. you can have blue eyes with brown eyed parents if each had a blue eyed parent.
Genetics. For example, if your mom has blue eyes and your dad has brown eyes, you'll PROBABLY have brown eyes because brown eyes is dominant over blue eyes.
that's not how you spell color. lol