Can two blue eyes make a brown eyed baby?

Two of the most important genes in eye color are OCA2 and HERC2. Both come in versions that can cause blue eyes. And they need each other to work. (In genetics, a relationship like this is called epistasis.) These two facts provide one explanation for how blue eyed parents can have a brown eyed child. read more

So a brown eyed person can still carry the genes for blue eyes. A blue eyed person is not likely to carry genes for brown eyes. Therefore, it’s relatively common for two brown eyes parents to have a blue eyed child if there are blue-eyed relatives in the family lines. What isn't common, however, is two blue eyed parents having a brown eyed child. read more

In this case. The husband passed a brown and a green card and the wife a clear and a blue. The child has brown eyes but could have blue or green eyed children because of the clear card. Here is one way that each child could end up with different colored eyes: For both the green and the blue eyed child, each parent had to pass a clear card. read more