New research shows that people with blue eyes have a single, common ancestor. A team at the University of Copenhagen have tracked down a genetic mutation which took place years ago and is the cause of the eye colour of all blue-eyed humans alive
What Does Your Color Say About You? They say the eyes are the window to the soul, but they are also a window to your gene. Your iris regulates how much light enters your eye and protects internal organs from harmful UV radiation.
What does it mean if mine are green sometime and blue sometime? <<<< The clothes you wear have an effect on your eye color. So does lighting. That’s what happens with lighter eyes. Also there is no way to determine personality from eye color.