As any long time reader here understands, my conjecture of an earlier
emergence of mankind taking place around 50,000 to 40,000 years ago
demands that a global distribution then took place. Without that
global distribution, my conjecture regarding a prior emergence of
modernity is on pretty thin ice. Until now there was no evidence of
this.
That problem is now answered here. A global distribution did take
place and that opened the door for modernity to arise. I am pleased
to see another prediction of the core conjecture get nailed down.
For new readers, it is enough to understand that the conjecture calls
for mankind to occupy the now submerged continental shelf and migrate
to space based refugia ahead of the planned crustal shift that ended
the Ice Age and ushered in the Holocene. Our ancestors were then
brought in to terraform the Earth.
Genetics suggest
global human expansion
by Staff Writers
Hinxton, England (UPI) Oct 30, 2012
Scientists using
DNA sequencing say they've uncovered a previously unknown period when
the human population expanded rapidly in prehistory.
The sequencing of 36
complete Y chromosomes revealed this population explosion occurred
40,000 to 50,000 years ago, between the first expansion of modern
humans out of Africa 60,000 to 70,000 ago and the Neolithic
expansions of people in several parts of the world starting 10,000
years ago, Britain's Wellcome Trust Sangster Institute reported.
"We have always
considered the expansion of humans out of Africa as being the largest
population expansion of modern humans, but our research questions
this theory," Wei Wei of the Sanger Institute and the West China
University of Medical Sciences said.
"Now we've found
a second wave of expansion that is much larger in terms of human
population growth and occurred over a very short period, somewhere
between 40,000 to 50,000 years ago."
One possible theory is
that during the original out-of-Africa expansion, humans moved along
the coastlines of the world, settling as they went.
Their origins and
genetic makeup would make them suited to coastal life, but not to the
demands of living inland.
"We think this
second, previously unknown population boom, may have occurred as
humans adapted to their new environment after the first out-of-Africa
expansion," institute researcher Qasim Ayub said.
"It took them
tens of thousands of years to adapt to the mountainous, forested
surroundings on the inner continents. "However, once their
genetic makeup was suited to these new environments, the population
increased extremely rapidly as the groups traveled inland and took
advantage of the abundance of space and food," Ayub said.
No comments:
Post a Comment