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Fact of the Day More Information Around six to ten thousand years ago, the OCA2 gene in a human's
chromosomes mutated. This mutation resulted in the turning off of the
what allows humans to have brown eyes. As the blue-eyed trait is a
recessive gene from only one person, it took a couple of generations
for it to actually show up physically. The first "mutated" person
would have still had brown eyes. Their offspring would still have
brown eyes. But when two of the offspring (say biological cousins,
generations later) reproduced, the two of them would allow the
recessive blue gene to come forward in their offspring.
So essentially all blue-eyed people are indirectly inbred. You can
thank the Danes for this interesting research.
Eiberg, Hans. "University of Copenhagen - News." Benhavns Universitet.
16 July 2009 .
"FOXNews.com - Scientist: All Blue-Eyed People Are Related - Science
News | Science & Technology | Technology News." Breaking News | Latest
News | Current News - FOXNews.com. 1 Feb. 2008. 16 July 2009 . View All Facts View Images View Maps Blog
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