Posted on 09/02/2009 12:47:20 PM PDT by SeekAndFind
Humans come in a rainbow of hues, from dark chocolate browns to nearly translucent whites.
This full kaleidoscope of skin colors was a relatively recent evolutionary development, according to biologists, occuring alongside the migration of modern humans out of Africa between 100,000 and 50,000 years ago.
The consensus among scientists has always been that lower levels of vitamin D at higher latitudes — where the sun is less intense — caused the lightening effect when modern humans, who began darker-skinned, first migrated north.
But other factors might be at work, a new study suggests. From the varying effects of frostbite to the sexual preferences of early men, a host of theories have been reviewed.
Vitamin D plays an important role in bone growth and the body's natural protection against certain diseases, and the inability to absorb enough in areas of less-powerful sunlight would have decreased life expectancies in our African ancestors. The further north they trekked, the more vitamin D they needed and the lighter they got over the generations, due to natural selection.
This explanation accounts for the world's gradients of skin color traveling south to north, the prevalence of vitamin D deficiency among African immigrants to higher latitudes, as well as the relatively darker skin of Canada's Inuit peoples, who have good levels of vitamin D despite living in the Arctic, due to their diet rich in oily fish.
(Excerpt) Read more at livescience.com ...
Moreover you have no idea how dominance/recessive traits work, even if it WAS applicable, which it is not.
All it would take for a black population to become a white population due to vitamin D deficiency from living in a northern climate is a slight reproductive advantage towards being even slightly lighter skinned for a couple thousand years.
A lighter skinned individual in northern climates where vitamin D could be a problem DO have a reproductive advantage over those darker skinned individual who would develop rickets from vitamin D deficiency.
All this time I thought white people are the creation of Yakkub, the devil.
According to Elijah Muhammad and his followers, an evil scientist named Yakub created the first white people. I forget if Jeremiah Wright’s explanation is the same or a bit different.
I’ve got a whole bunch of mystery lines, genealogically speaking, on both maternal and paternal sides, that I can only find record of to the early 1500’s in modern-day France, German speaking and near the Rhine though, in Alsace, with a few in Canton Basel, Switzerland, and a few on the other side of the Rhine. All their surnames could be considered Jewish, but they were Moravian. Had a penchant for Hebrew placenames in PA and NC. Bethlehem, Bethabara, Bethania, Salem. I’ve often wondered who they really were, and where they came from. Spain? The era is about right, for them to just pop up like they seem to have.
why do they ASSUME it BECAME white?
is this one of those PC leftwing pseudo science mags?
[That’s too funny. I was thinking of Jackson when I read the title. LOL]
Only in America could a poor black boy grow up to be a rich white woman.
Or so the joke goes.
No cvq, white people play golf so they can dress like black people.
Apparently there is a hierarchy of "hispanics" that I was unaware of-and that there is much disagreement about. I'll leave it there.
It was the devil. He wanted HIS own race. So they could do bad things to EVERYBODY else for all of time. Oh, and to take over EVERYTHING also. And to be mean to other races. -Without exception.
Ahhsooo! /bows
Perhaps Adam was white and Eve was black and their descendants ran the gamut of varieties of hue.
Deep Thoughts:
I think I’m white because I was born that way. I think I was born that way because there was no sun in my mother’s womb.
I though a mad scientist named Yakub accidently created us whites.
People became white so they could take MASSIVE DOSES OF VITAMIN D......THAN BECOME BLACK and write a bestselling book like JOHN HOWARD GRIFFIN!
http://www.amazon.com/Black-Like-John-Howard-Griffin/dp/0451192036
>>>Why Did People Become White?<<<
Same reason as aspirin...because they work.
Ah this is somewhat incorrect and is in fact the reverse of whats looks to be true...
First ...All people of any color have some "white" skin...
Look at the palm of the hand and soles of the feet of the darkest person
The skin there is "white"...
Is there any befits to that area being "white" on all people of any color?
Or is "white" just the default
The palm of the hand and soles of the feet are areas that do not need protection from the sun...so no need for the body to wast the effort doing the unnecessary of darkening the skin
Conversely light skin people do darker when needed
Coloring the skin look to be an extra cost option not order when not needed, white skin looks to be the lower cost economy model
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