See? The Spanish arrival led to the total extinction of the genetic lines found in PreColumbian remains, and in 500 years is all — but this means that the ancestors of all PreColumbian populations entered the Americas across the Bering Strait 16K years ago, AND NOT BEFORE!!!
Ridiculous.
What it says is, in a few centuries, an entire population can be effectively erased from the surviving DNA pool — even though, obviously, they are descended from PreColumbian ancestors.
The same process eliminates most of each of our ancestors — we have 46 genetic family trees (at most; this is apart from unusual situations such as Down Syndrome)
Populations which were in the Americas prior to 16K years ago, or prior to the ingress of any new waves of people, could just as easily have been erased from the DNA of later people.
A Mysterious Mammoth Carcass Could Change Human History [2016]
http://www.freerepublic.com/focus/chat/3383872/posts
New Signposts On The Path Of Early Human Migration [2007]
http://www.freerepublic.com/focus/news/1766187/posts
“Furthermore, Llamas says, ancient specimens that the researchers can extract DNA from are limited. In this study, most of the ancient individuals are from Bolivia, Chile, and Peru. So, he says, “there may have been some kind of bias in our sampling.”
As such, “The conclusions that we have drawn from this dataset may change in the future when we gather more data,” he says. “It's an ongoing story.”
Also, they studied only mitochondrial DNA, which is referenced only once, and not emphasized, at the Eureka link.
Here's the CSM link:
I have always been very skeptical that European diseases wiped out 90% of Native Americans.
The journalists at Eureka and CSM seem to be more concerned about supporting that politically correct hypothesis than about carefully interpreting the data from this recent study.
Source: cryptozoonews.com
“And there is where we get back to quick-freezing mammoths, for the frozen-food experts have pointed out that to do this, starting with a healthy live specimen, you would have to drop the temperature of the air surrounding it down to a point of well below minus-150 degrees Fahrenheit (-101.1°C). There are two ways of freezing rapidly – one is by the blast method, the other by the mist process; these terms explain themselves. Moreover, the colder air or any gases become, the heavier it gets. If the volcanic gases went up far enough they would be violently chilled by the ‘cold of space,’ as it is called, and then as they spiraled toward the poles, as all the atmosphere in time does, they would begin to descend.
“When they came upon a warm layer of air, they would weigh heavily upon it and pull all the heat out of it and then would eventually fall through it, probably with increasing momentum and perhaps in great blobs, pouring down through the weakest spots. And if they did this, the blob would displace the air already there, outward in all directions and with the utmost violence. Such descending gases might well be cold enough to kill and then instantly freeze a mammoth.