How are human eye colors inherited?
"Genes are structures that are carried on larger structures called chromosomes. The genes for each characteristic come in pairs, and the two genes together produce a given characteristic."
New genes involved in human eye color identified
"Three new genetic loci have been identified with involvement in subtle and quantitative variation of human eye color."
Blue-eyed Humans Have A Single, Common Ancestor
"New research shows that people with blue eyes have a single, common ancestor."
Why Do Babies' Eyes Start Out Blue, Then Change Color?
"While only 1 in 5 Caucasian adults have blue eyes in the United States, most are born blue-eyed."
"Why does the hair color of children often change color as they grow older?"
"Why did the very blue eyes of a kid become brown when he grew up?"
"Just as the cerulean blue of a baby's eyes fades over time, so does the blue sky as it stretches over the horizon - but two different scattering effects are responsible for the changes."