Gene Study Supports Single Bering Strait Migration
Invisible Pink Unicorn writes "One of the most comprehensive analyses of genetic variation ever undertaken supports the theory that the ancestors of modern native peoples throughout the Americas came from a single source in East Asia across a northwest land bridge some 12,000 years ago. One particular discovery is of a 'unique genetic variant widespread in natives across both continents — suggesting that the first humans in the Americas came in a single migration or multiple waves from a single source, not in waves of migrations from different sources.' The full article is available online from PLoS."
Does this mean that Native Americans really aren't "native"?
If you post as Anonymous Coward, don't expect a reply.
Cartographer, largely regarded as the source of the name "America" from his maps
http://en.wikipedia.org/wiki/Amerigo_Vespucci
However, the difference is the Chinese didn't come here to STAY, invade, expurgate, demolish, or hijack an existing, thriving human ecosystem (competitive and warring, true), nor to subject the Natives.
...?
What evidence do we have for these assertions?
Given the scant archaeological evidence -- very interesting evidence, yes, but scant -- how can we say anything more than "Chinese ships arrived at an early date, carrying glass beads" and "some tombstones and obelisks appear to be Chinese"
I submit that these archaeological evidences tell us more or less nothing about Chinese motives. Perhaps the Chinese attempted to conquer the native peoples, and failed. Or, maybe the Chinese were noble non-invasive explorers. No way to tell.
-kgj
-kgj
the oceans have been rising since the last ice age, Al Gore forgets that part
No. If you'd actually been paying attention, by looking at the evidence over the last SEVERAL Ice Ages, we have determined that our climate is way outside the norms.
Everyone, even Al Gore, understands that the world gets warmer after an Ice Age then peaks, and then gets cooler as we head into another Ice Age. And everyone gets that we will experience 'global warming' until we peak, and the cycle turns the other way.
The issue here is that the evidence shows that we're FAR FAR beyond where we usually peak between Ice Ages.
Its like gravity and the mantra "Whatever goes up must come down!" And everything we through into the air until the 20th century complied with that rule.
But if you've go up high enough fast enough you don't come back down naturally.
Now at this stage with 'global warming' we don't KNOW we can't come back down naturally, but we don't have any evidence that we will, either. We are NOT within the normal climate parameters for the 'warming periods' between Ice Ages. We are FAR beyond that.
You'd be the guy sitting on Voyager-1 going, "I don't see what all the fuss is about the potential for leaving the solar system never to return. We throw things up, they peak, and then they fall back down! And everything that we have ever launched upwards has always had a stage where it was 'going up'. The people raising this issue forget that part."
Excuse me, could someone explain to me how "the theory that the ancestors of modern native peoples throughout the Americas came from a single source in East Asia" is not a theory, as the !atheory tag seems to point out?
You just got troll'd!
No, but it does suggest that the genetic evidence for this was not found in this study. Small genetic populations can easily be lost in a larger population. All this says is that the populations which survive today have markers and appropriate genetic variation to be descendants of descendants of populations in Asia.
This doesn't explain the cultural aspects of how the move occurred or how they were culturally linked to each other and to groups outside of the Americas. This mostly reinforces what was already known: that around 15,000 years ago, there was a dramatic population increase in the Americas starting in the Pacific Northwest and moving down to South America.
This information doesn't say anything about a land bridge or existing populations of people except to say that if there were existing populations that their genetics didn't survive to modern times in significant amounts which is suggestive of small populations which did not integrate into the new-coming population; if they existed at all.
English, motherfucker. Do you speak it? Your point agrees with his.
Yeah. Would you choose a neurosurgeon who pokes around people's brains in his spare time? I wouldn't.
That is totally wrong. Even the IPCC report correctly state that the peak temperature during the last interglacial was significantly higher than present temperatures. (It blames a difference in orbital factors, which is unfounded.) There is nothing climatic that is outside the normas at all, certainly not temperature. The only thing that is outside the norms is CO2 concentration.
That was just one small population, not all "native" Americans. IIRC, that group eventually was killed off, as well.
I researched this matter a bit for a native american history class I had. Frankly, there are a lot of differences between our system and theirs. Their system was a loose confederacy of independent tribes/states, closer to the U.S. under the articles of confederation than to the U.S. since the constitution. The more interesting evidence is in the letters and dialogues among intellectuals at the time -
1. in America there were frequent meetings between Iroquois and colonial representatives, as they were a strong political force at the time, and people such as Franklin and Jefferson conversed about the confederacy with interest.
2. At one such meeting in 1744 an Iroquois representative named Canassantego suggested that the colonies should join into a confederacy. as one source quoted him - "We heartily recommend union...between you your brethren...We [The Iroquois] are a powerful confederacy; and, by your observing the same methods our wise forefathers have taken, you will acquire fresh strength and power."
3. Several european intellectuals wrote and pondered on the government of the Iroquois, and offered them up as proof that democratic societies could work.
I personally don't think it is fair to say that we "got the idea of a republic" from the Iroquois, because ultimately we modeled our system after European theories and examples. However I do think having a functioning republic on the border of the colonies might have served as a source of inspiration because it took abstract and academic European theory and made it into something tangible for the colonists.
This study may well be entirely supported and its sample group representative. I have no expertise in this matter at all.
That disclaimer aside, there is a chance that this study's base assumption belies a fatal flaw. The exact percentage of Indigenous peoples to the Americas that survived the epidemics unleashed upon them by the Early Europeans is unknown. The percentage of the survivors may be lower than 10% of the general population after 1492 than existed before that time.
Testing a population after a **massive** cull brought on by an epidemic centuries ago is a very slippery genetic slope.
By way of a poor analogy, Cystic fibrosis is a mutation traceable to Scandanavia in the middle ages where the mutation - as horrible as its longterm effects may be - played a significant role in the carriers of the mutation having a genetic advantage to survive infection by bubonic plague. What means miserable death now meant life, then.
If (and that's a BIG if) the genetic marker they are tracing played a role in the survival of the current population from the epidemic unleashed upon them by the Europeans (believed to be primarily small pox) then what is being studied as a representative sample of an entire population may, in fact, be an isolated view of a trait that the survivors of the smallpox epidemic all shared. As a consequence, this result may have nothing to do with the vastly larger genetic base of the those who died and the migration patterns THEIR genes would have shown.
We simply don't know. I suppose that DNA samples from those frozen Mayan children (whose genes were not selected in any way by epidemiology) could be illuminating on this issue.
If you are, in fact, examining a control group, but believe that biased control group to be a representative sample of a much larger general population, your data may well be fatally flawed.
.Robert