My wife and I have a son that is 1 month and 4 days old today. Thank you, Xavier, The genetic determination of eye color is far more complicated than was once thought. Scientists have identified three gene pairs that affect eye color and it is believed that there are more than this that contribute to or modify other eye color genes. It has a discussion about eye color genetics and links to other related websites. I will try to summarize some information for you but urge you to visit this page for more details.
Genes occur in pairs, one contributed by our mother and one by our father.
Sometimes a trait is determined by a single pair of genes in which one copy of the gene is expressed over the other. The recessive gene is expressed only if both copies of the gene are of the recessive type. To explain eye color, scientists have devised a two gene pair model. In this model the first gene pair can be either a brown eye gene or a blue eye gene. Brown is dominant to blue.