Genetic research is a fascinating field that discovers many things about ourselves and our ancestors, answering questions we ask ourselves. And today I tell you that it has been discovered the reason why there are people with blue eyes. Everyone has a common ancestor.
Humans had all brown eyes for millions of years. The "switch" that determines the color of the blue eyes is housed in the OCA2 gene and was "on" in all human beings until, according to these researchers, a mutation appeared that affected this gene and that made their eyes not They will develop the melanin that is responsible for the brown color of our eyes.
This happened in the Black Sea area between 6,000 and 10,000 years ago and, after making genetic analyzes to blue-eyed people from places as distant as Turkey, Denmark or Jordan, it has been pointed out that the original mutation occurred then and from there they descend All people with eyes that color. Moreover, they affirm that all descend from a single individual who would be the one who was born, originally, with said mutation.
So if your children have blue eyes you already know that it is a gift from that common grandfather. That is the reason why there are blue-eyed people. What is interesting?
