Here's what made those brown eyes blue - Health - Health care - More health news - msnbc.com How did blue eyes come about? The article indicates blue eyes just turned up all of a sudden... we share the same marker with all blue eyes, same common ancestor? 1 person? Thats pretty amazing if true....Wouldn't that person have to do a lot of "work" in a lot of "job sites" in order to spread a lot of xxxblue around?....Some guy gets borne with freak blue eyes, next thing you know he's on a road tour delivering blue eyes across the world? ...Don't understand too well. Anyone explain how that works?
Ha. That was a terrible movie. I was so ready for that film....And then.... Sting sucks....Hey , you got me off topic....
Aww, it does have its moments LOL Anyway - there's been at least one near-extinction level event in the lifetime of Homo Sapiens, IIRC as a result of the supervolcanic eruption of Mount Tambor in Indonesia. That one took the species down to around 10,000 humans around the world....and it wouldn't take much for one individual to make a splash in a tribal society like that.
Lol I had to check - Mount Tambor was actually the 1815 "year without a summer" eruption, it was Lake Toba further east in Sumatra that was the supervolcanic eruption 69,000–77,000 years ago. Apparently, the DNA evidence suggests that all humans alive today are descended from a very small population, from 1,000 to 10,000 breeding pairs....about 70,000 years ago.... Of course, it could just be coincidence...
That would explain all the signs/symptoms of inbreeding....like "lawyers" and "politicians". Hmmmm...blue eyes showing up all of a sudden...should we combine this thread with the alien invasion thread? I'm sure there's a tinfoil-hat conspiracy theory that covers that somewhere....
Blue eyes being a recessive gene I'd think that it would require more than one person to develop them or interbreeding. If B=the Brown eyed gene and b=the blue eyed gene a brown eyed person can have BB or Bb, a blue eyed person only bb. So a brown eyed person with no recessive gene mating with a blue eyed person can only produce brown eyed children. BB+bb=Bb or Bb. Two brown eyed parents both with the recessive gene could produce a blue eyed child depending on which gene they pass. Bb+Bb=BB or Bb or bB or bb (blue eyed). If you had the original blue eyed person mating with a person with no recessive gene. You'd have BB+bb. All children would be brown eyed with the recessive blue gene. It wouldn't be until the next generation that they'd have a 25% chance of a blue eyed child.
I believe that there is no one single gene that determines eye color. My father has brown eyes, my mother green. I have green, but my sister, brown. My wife's parents are also green and brown. My wife has green as well, but they were blue until she was about 12. Her brother has green. Both of my daughters are blue eyed, almost violet.
My daughter, Erin, has blue eyes. She is the product of genetic material from parents who are VERY far removed, culturally speaking, from one another. I am of mediterranean/viking extraction, (Cypriot/Dane). My wife, Arlene, is part Maori/ French. Her family ancestry can be traced back to the minstrel Blondelle, the man who supposedly found Richard Cour-De-Lion in his jail cell by recognition of the Lionheart's singing voice, heard from outside the walls. Her family always told me that Blondelle "paid Richard's ransom", but they are mistaken, for his ransom was worth three times the national income of England at the time, and was paid, in full, by Elanore of Aquitaine. Blondelle the French minstrel became Blundell, and my wife's mother was 50% Maori, whilst her father was French-Scottish. Quite a genetic mix. We had this wide separartion of genetics in mind when we concieved our daughter. My wife was 45 at the time, and running out of time. It was then or never. Like her first child, delivered at 32 years old, her second child was born without anesthetics of any kind, and emerged screaming as soon as the dear girl hit the air. There was not a mark on her, with the exception of a small 'port wine' stain' at the nape of her neck. She was a picture of health. When thinking about that birth later, it occurred to me that Arlene's Maori ancestors would have delivered children in just this fashion. My wife was ready to go home only two hours after delivery, but internal bleeding caused by a very short umbilical chord forced her overnight stay at the hospital. Other than this, she could have been delivering our daughter in a grass hut, with no assistance. It is in just this manner that our forebears would have faced children and their delivery. We stand, genetically, on the shoulders of VERY healthy individuals. They were made TOUGH as well. They had to be. Think of walking around for years with a chiropractic problem, something they would have atributed to old age. They put up with a lot. Arlene tells me, also, that Maori women had to be ready to take on a tribal role very soon after birth. The tribe had a wedge formation, with the males on the point and down the sides, and the women and children in the center. Warfare was all about extinction of the enemy down to the last man, with women carted off as spoils, and children unable to cope with it all left to starve or hunt as their age and training dictated. What does all this have to do with blue eyed kids? Well, most Maori have very brown eyes. But, with genetic crossmultiplication, this began to change, until the present state of affairs dictated that blue-eyed Maori's were just as common as brown eyed ones. They had to interbreed to achieve this change, (there are no 'full-blood' Maori left anymore). Because their genetics were very diverse in the first place, subtle changes began to appear in their race. My theory is that blue eyed children are a product of this racial and genetic mixing. Vive la differance! The more widely dispersed genetic material is, the better the child is able to maintain it's healthy constitution and well being. The closer the genetics are, the more likely that something will be abnormal, rather than simply 'different'. Just as an aside, Australian aborigines have a VERY complex social network of 'skin names' to avoid birth defects. They will marry only people from certain other 'skin groups'. Skin groups that are too close are taboo. This information is passed on by elders, which is precisely why their consent must be sought before a union. Australian Aborigines, even today, are very intolerant of children that are 'abnormal'. One can imagine that in 80,000 years of generational experimentation, they have deep seated cultural taboos against supporting mouths that cannot fend for themselves. It is my understanding that ALL Australian aborigines were 'brown eyed' before Europeans arrived. So, just from this evidence alone, I surmise that blue eyes come from new combinations of genes that were not possible many thousands of years ago. New genetic combinations are profound shock to our genetic makeup, a reaction by the genes to the very 'differences' that have suddenly been imposed upon them, rather than going through the 'same old routine' when genes mix from cultural groups that are not far removed from one another. Just my view.
He had a bike??? Seriously - both parables regarding the Australian Aboriginal and NZ Maori peoples shows how fast even recessive genes can spread...in each of these cases, in just a few hundred years; but since the Lake Toba genetic chokepoint, how many centuries have passed?
This might help. "Originally, we all had brown eyes", said Professor 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. ...The mutation of brown eyes to blue represents neither a positive nor a negative mutation. It is one of several mutations such as hair colour, baldness, freckles and beauty spots, which neither increases nor reduces a human’s chance of survival. As Professor Eiberg says, “it simply shows that nature is constantly shuffling the human genome, creating a genetic cocktail of human chromosomes and trying out different changes as it does so.” Goto: Blue-eyed Humans Have A Single, Common Ancestor A second source on the same subject which makes the position more likely than not, they know which gene turns the production of melanin in the eyes and turns the "brown eyes blue".
I was taught this in my college biology classes. When you posted what you did, I decided to google the subject and you are in fact correct. The scientific theory on this particular topic has changed. Genetic research has come a long way in the last couple decades but apparently they are still not sure of the exact mechanism that causes eye color. From Wikipedia: "The once-held view that blue eye color is a simple recessive trait has been shown to be incorrect."
To think that Joeseph Mengele put children through barbaric 'medical research' to discover the reason for this. A terrible thiing to do for really so little in the way of knowledge. The Nazi's placed far too much emphasis on this trait. I don't believe that eye color means anything at all concerning the intelligence or physical prowess of any person. It just IS. This thread could easily have made the mainstream topics here, rather than 'Free Fire'. But thats something for Mods to consider, rather than humble functionaries such as yours truly.
While its true that genetic mutation led to formation of blue, green, gray or other colors of eyes. I find it a bit unreal to see that some of these colors are race specific. I have rarely seen Hispanics, Blacks or Asians with natural blue colored eyes.
Really interesting....Regarding thread topic location- couldn't find any appropriate other place to put. There are a lot of good reads not available to general public in the free fire zone. I can see how they 'd (admin) want only war related stuff visible to non members.
