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Everyone that has blue eyes is related

[views:6506][posts:26]
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[Nov 11,2011 12:21pm - arilliusbm ""]
Stolen from sigh

http://www.msnbc.msn.com/id/22934464/#.Tr1SQkP21r5

People with blue eyes have a single, common ancestor, according to new research.

A team of scientists has tracked down a genetic mutation that leads to blue eyes. The mutation occurred between 6,000 and 10,000 years ago, so before then, there were no blue eyes.

"Originally, we all had brown eyes," said Hans Eiberg from the Department of Cellular and Molecular Medicine at the University of Copenhagen.


The mutation affected the so-called OCA2 gene, which is involved in the production of melanin, the pigment that gives color to our hair, eyes and skin.

"A genetic mutation affecting the OCA2 gene in our chromosomes resulted in the creation of a 'switch,' which literally 'turned off' the ability to produce brown eyes," Eiberg said.

The genetic switch is located in the gene adjacent to OCA2 and rather than completely turning off the gene, the switch limits its action, which reduces the production of melanin in the iris. In effect, the turned-down switch diluted brown eyes to blue.

If the OCA2 gene had been completely shut down, our hair, eyes and skin would be melanin-less, a condition known as albinism.

"It's exactly what I sort of expected to see from what we know about selection around this area," said John Hawks of the University of Wisconsin-Madison, referring to the study results regarding the OCA2 gene. Hawks was not involved in the current study.

Baby blues
Eiberg and his team examined DNA from mitochondria, the cells' energy-making structures, of blue-eyed individuals in countries including Jordan, Denmark and Turkey. This genetic material comes from females, so it can trace maternal lineages.

They specifically looked at sequences of DNA on the OCA2 gene and the genetic mutation associated with turning down melanin production.

Over the course of several generations, segments of ancestral DNA get shuffled so that individuals have varying sequences. Some of these segments, however, that haven't been reshuffled are called haplotypes. If a group of individuals shares long haplotypes, that means the sequence arose relatively recently in our human ancestors. The DNA sequence didn't have enough time to get mixed up.

"What they were able to show is that the people who have blue eyes in Denmark, as far as Jordan, these people all have this same haplotype, they all have exactly the same gene changes that are all linked to this one mutation that makes eyes blue," Hawks said in a telephone interview.

Melanin switch
The mutation is what regulates the OCA2 switch for melanin production. And depending on the amount of melanin in the iris, a person can end up with eye color ranging from brown to green. Brown-eyed individuals have considerable individual variation in the area of their DNA that controls melanin production. But they found that blue-eyed individuals only have a small degree of variation in the amount of melanin in their eyes.

"Out of 800 persons we have only found one person which didn't fit but his eye color was blue with a single brown spot," Eiberg told LiveScience, referring to the finding that blue-eyed individuals all had the same sequence of DNA linked with melanin production.

"From this we can conclude that all blue-eyed individuals are linked to the same ancestor," Eiberg said. "They have all inherited the same switch at exactly the same spot in their DNA." Eiberg and his colleagues detailed their study in the Jan. 3 online edition of the journal Human Genetics.

That genetic switch somehow spread throughout Europe and now other parts of the world.

"The question really is, 'Why did we go from having nobody on Earth with blue eyes 10,000 years ago to having 20 or 40 percent of Europeans having blue eyes now?" Hawks said. "This gene does something good for people. It makes them have more kids."

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[Nov 11,2011 12:27pm - Lamp ""]
never mind, posted before I finished reading
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[Nov 11,2011 12:28pm - sigh  ""]
Based on their conclusion I should be rolling in pussy.
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[Nov 11,2011 12:30pm - Samantha ""]

arilliusbm said:
"The question really is, 'Why did we go from having nobody on Earth with blue eyes 10,000 years ago to having 20 or 40 percent of Europeans having blue eyes now?" Hawks said. "This gene does something good for people. It makes them have more kids."




http://www.sciencedaily.com/releases/2006/10/061023193617.htm

"According to Bruno Laeng and colleagues, from the University of Tromso, Norway, the human eye color reflects a simple, predictable and reliable genetic pattern of inheritance. Their studies1, published in the Springer journal Behavioral Ecology and Sociobiology, show that blue-eyed men find blue-eyed women more attractive than brown-eyed women. According to the researchers, it is because there could be an unconscious male adaptation for the detection of paternity, based on eye color."
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[Nov 11,2011 12:34pm - arilliusbm ""]
What about our 3rd eye? How come NO ONE CARES ABOUT THAT
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[Nov 11,2011 12:39pm - NuclearWinter ""]

bennyhillifier
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[Nov 11,2011 12:40pm - Yeti ""]
my eyes are blue, but my third eye is brown.
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[Nov 11,2011 12:41pm - Yeti ""]
i don't care either way, but i work with this girl who has the most mesmerizing glacial blue blowjob eyes. my girlfriend has dark brown eyes and i love them.
 _____________________________________
[Nov 11,2011 12:42pm - arilliusbm ""]
IT TELLSH ME THAT GOOSHSTEPPING MORONS LIKE YOUSHELF SHOULD TRY READING BOOKSH INSHTEAD OF BURNING THEM
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[Nov 11,2011 12:45pm - Yeti ""]
[img]
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[Nov 11,2011 12:58pm - Registered Republican  ""]
This is obviously a fabrication by the godless liberal scientific community! Everyone knows that the earth is only 5,000 years old! The bible tells us so! To suggest that eye color is determined by anything other than God's will is insulting, and quite frankly - UNAMERICAN!
 ______________________________
[Nov 11,2011 1:01pm - Yeti ""]
Bury your dreams
Drown your skin
Useful ruins

Baby Blue Eyes

Perfect waist
Perfect skin
Breed and serve

Baby Blue Eyes

Bury your dreams
Drown your skin
Useful ruins

Baby Blue Eyes
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[Nov 12,2011 6:31am - frankovhell  ""]
Blue eyes do indeed help you get laid.
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[Nov 12,2011 1:58pm - The_Reverend ""]
My eyes have a circle of green and a circle of blue. Wonder what that does for me?
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[Nov 12,2011 2:01pm - The_Reverend ""]
I thought the conclusion would be that brown eyed girls are full of shit.
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[Nov 12,2011 2:04pm - Pires ""]

The_Reverend said:My eyes have a circle of green and a circle of blue. Wonder what that does for me?


It makes you unable to spell properly.
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[Nov 12,2011 2:11pm - Oh Snap Troll  ""]
Oh snap!
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[Nov 12,2011 9:21pm - the_reverend ""]
Yeah.. I sure did get served there. Wow!
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[Nov 12,2011 11:47pm - Pires ""]
<3
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[Nov 13,2011 9:59am - CurlyRed ""]
I like green eyes the best.
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[Nov 13,2011 10:10am - Doomkid ""]
I would only have been surprised if blue eyes had arisen from multiple individuals having the same mutation occur.
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[Nov 13,2011 11:27am - Alx_Casket ""]
[img]
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[Nov 13,2011 1:06pm - Lamp ""]

CurlyRed said:I like green eyes the best.


sup
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[Nov 13,2011 5:28pm - arilliusbm ""]
Lamp has bright eyes.

LOL GET IT
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[Nov 13,2011 5:32pm - blessed offal nli  ""]

arilliusbm said:IT TELLSH ME THAT GOOSHSTEPPING MORONS LIKE YOUSHELF SHOULD TRY READING BOOKSH INSHTEAD OF BURNING THEM


post of the month
:point:
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[Nov 14,2011 1:36am - Lamp nli  ""]

arilliusbm said:Lamp has bright eyes.

LOL GET IT



aaaahhhhhhhhhhhhhhh yo
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[Nov 15,2011 9:23am - Mutis NLI  ""]
In just a couple decades nobody will have blue eyes anymore. And we'll all be hispanic.


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