Scientist+all+blue+eyed+peole+are+related

Fox News February 1, 2008 The article talked about how all blue eyed people are related. It said that blue eyes were created from a mutation in the OCA2 Gene that affects the eye color, skin color, and hair color. The mutation occurred when an adenine switched to a guanine. It said that if the mutation deactivated OCA2 all blue eyed people would be albinos. The scientist that the article talks about took a team and studied 155 individuals that have blue eyes; all of them had the same mutation next to the OCA2 gene. The scientist said that the mutation took place north of the Black Sea but that is just a guess. They said that the first person that had the mutation did not have blue eyes and neither did his children but most likely his grandchildren or great grandchildren first developed blue eyes.

Blue eyes are a recessive trait and the gene must be in both parents. It wasn't until grandchildren of the original mutant hooked up because cousin marriage was the norm in most of human history. The scientist stressed that the genetic variation in neither positive nor a negative mutation. The mutation also produces greater instances of blond hair and fair skin. That confers a survival advantage by making more vitamin D in the sun-starved northern European countries and that is where blue eyes are most prevalent.

Cal Thorne March 10, 2010