Blue eyes are a recessive trait in humans. I read an article recently which stated:
People with blue eyes have a single, common ancestor, according to new research.
A team of scientists has tracked down a genetic mutation that leads to blue eyes. The mutation occurred between 6,000 and 10,000 years ago. Before then, there were no blue eyes.
"Originally, we all had brown eyes," said Hans Eiberg from the Department of Cellular and Molecular Medicine at the University of Copenhagen.
Which appears to be a mainstream hypothesis today. My question is, if there is a genetic mutation that occurred in one individual which made their eyes blue, and the rest of the population is brown eyed, how does this make so many individuals blue eyed? If the blue eyes are recessive, the individual's children would mix with the other brown-eyed individuals and their offspring will be brown-eyed. How does anyone treat this theory seriously?