Among human beings blue eyes are less common than brown eyes.
White marbling in blue eyes human.
This is one reason why blue colour contact lenses are popular.
Blue eyes at birth doesn t mean blue eyes for life.
The human eye does not have its full adult amount of pigment at birth.
It appears that a genetic mutation in a single individual in europe 6 000 to 10 000 years ago led to the development of blue eyes according to researchers at the university.
Blue eyes are common in northern europe and emerged some.
Scientists have tracked down a genetic mutation which took place 6 000 10 000 years ago and is the cause of the eye.
New research shows that people with blue eyes have a single common ancestor.
White cats that have two blue eyes are prone to a higher tendency of being deaf than do cats that have other coat and eye color combinations.
Because of this many babies have blue eyes but their eye color changes as the eye develops during early childhood and more melanin is produced in the iris.
Our remote ancestors likely had dark eyes whether brown or black.