Posted on 04/14/2022 12:06:44 PM PDT by Roman_War_Criminal
New research shows that people with blue eyes have a single, common ancestor. Scientists have tracked down a genetic mutation which took place 6,000-10,000 years ago and is the cause of the eye color of all blue-eyed humans alive on the planet today
"Originally, we all had brown eyes," said Professor Hans Eiberg from the Department of Cellular and Molecular Medicine. "But 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." The OCA2 gene codes for the so-called P protein, which is involved in the production of melanin, the pigment that gives colour to our hair, eyes and skin. The "switch," which is located in the gene adjacent to OCA2 does not, however, turn off the gene entirely, but rather limits its action to reducing the production of melanin in the iris -- effectively "diluting" brown eyes to blue. The switch's effect on OCA2 is very specific therefore. If the OCA2 gene had been completely destroyed or turned off, human beings would be without melanin in their hair, eyes or skin colour -- a condition known as albinism.
(Excerpt) Read more at sciencedaily.com ...
Both of my grandfathers had blue eyes. I do not. So who has the common ancestor?
Child
Eye color of a child (probability):
Brown - 0.2%
Green - 0.2%
Blue - 99.6%
Maybe mom’s “joke” that Gypsies stole her real kid from the maternity ward really isn’t one.
/green eyed changeling
There was a lady who worked at the Revco drug store.
She had amber eyes, exactly like a lion.
They were incredible.
/now wonders where she put all her Barry Fell books...
We’re aliens, ya know.
That's interesting. My father had blue eyes. According to my parents, I had them too--or seemed to have them--until they turned green.
“My father had blue eyes. According to my parents, I had them too—or seemed to have them—until they turned green.”
Through most of my life, all my records indicated blue eyes, until the time I was fitted for contact lenses. (Aged 77).
She: “Slide them over until you’ve covered the green”.
Me: “What? Green?”
“So, how did some of the Mandan tribe of North Dakota have blue eyes according to the letters of George Catlin?”
Possibly from captured settlers’ children, kidnapped from wagon train raids?
Me too.
There were no white settlers in that area at that time. Nearest town was St Louis.
Both of your parents are your ancestors, but you only got half of each of their genome.
You have 23 chromosome pairs, and that’s not an even number.
The closest split you’ll get from each pair of grandparents is 12 and 11 (for example, 12 chromosome halfs from grandpa, 11 from grandma).
Each of us has 64 (or fewer, with knotted family trees) great-great-great-great-grandparents, and each of them is indeed your ancestor, but you only carry chromosomes from 46 of them.
That's not what my eye doctor said.
My eye doctor said everyone with brown eyes is full of crap.
Everyone with blue eyes is a quart low.
At 80, I can say ALL of my IDs of the past listed my eye color as blue.
When I went for contact lenses recently, the assistant said to move the lenses so they would cover the green!
==8-O
What’s happening?
Who is “FRANCIS SINTRA”?
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