“but there are many people who have green-brown eyes.” Just as the MC1R gene determines your hair color, a single gene, OCA2, is 75% responsible for your eye color, Dr. Kaplan says. For eye ...

lighter hair colors such as blonde, red, and brown, as well as black, and a wide variety of eye colors such as blue, brown, green, and gray. However, a new study analyzing the DNA of ancient ...