Showing posts with label neanderthals. Show all posts
Showing posts with label neanderthals. Show all posts

Friday, May 7, 2010

Meet the in-laws ...


These are not new results, but more details are emerging.   Neanderthal genes occur randomly at the 1%-4% level in non-African humans, yet there is no sign of modern human genes in the Neanderthal samples.

Neanderthals and humans interbred, fossils indicate - USATODAY.com
Stocky, thick-browed and heavy-boned, the Neanderthals last shared a common ancestor with the African precursors to modern humans about 500,000 years ago. The Neanderthals populated the Near East and Europe until they vanished from the fossil record about 30,000 years ago. The gene maps produced by the DNA analysis of the bones found Neanderthal genes scattered randomly among non-Africans, Paabo says, indicating they don't account for any racial differences between modern-day Africans and anyone else. Also, the study finds no sign of human genes intruding into the Neanderthal lineage.

Wednesday, April 21, 2010

Neanderthals still with us.


Comparison of the entire genome of nearly 2000 people world wide reveals evidence that is best explained by two episodes of interbreeding with Neanderthals at 60K and 45K years ago.



Neanderthals may have interbred with humans twice
The research was carried out by a group of genetic anthropologists from the University of New Mexico, and leader of the team, Jeffrey Long, said the findings mean Neanderthals did not completely disappear, but “there is a little bit of Neanderthal left over in almost all humans.”

Friday, February 19, 2010

The Rhyme of the Ancient Mariners

Unexpected find: Hominids with seafaring technology advanced enough to sail to Crete.  Wonder if they had pirates, too?

Primitive Humans Conquered Sea, Surprising Finds Suggests
Crete has been surrounded by vast stretches of sea for some five million years. The discovery of the hand ax suggests that people besides technologically modern humans—possibly Homo heidelbergensis—island-hopped across the Mediterranean tens of thousands of millennia earlier than expected.


Wednesday, July 22, 2009

Neanderthal speared by a human

It looks possible that 50,000 years ago, at least one human threw a spear at a Neanderthal, hit him and perhaps lead to his death weeks later.

Human Stabbed a Neanderthal, Evidence Suggests | LiveScience
Newly analyzed remains suggest that a modern human killed a Neanderthal man in what is now Iraq between 50,000 and 75,000 years ago. The finding is scant but tantalizing evidence for a theory that modern humans helped to kill off the Neanderthals.


Sunday, May 17, 2009

Neanderthals, where on Earth did you go?


It seems they found a Neanderthal skull, with butcher marks, in a human bone midden.  

How Neanderthals met a grisly fate: devoured by humans | Science | The Observer
But not every team member agrees. "One set of cut marks does not make a complete case for cannibalism," said Francesco d'Errico, of the Institute of Prehistory in Bordeaux. It was also possible that the jawbone had been found by humans and its teeth used to make a necklace, he said.

...

"This does not prove we systematically eradicated the Neanderthals or that we regularly ate their flesh. But it does add to the evidence that competition from modern humans probably contributed to Neanderthal extinction."

Friday, January 9, 2009

Neanderthals more likely to have O blood type?


Several interesting consequences if borne out, including this one that observes O type blood suggests long isolations for certain types of disease.

Neanderthals might have made good blood donors - life - 09 January 2009 - New Scientist
"It is interesting that Neanderthals have a high O frequency, because the other group with a high O frequency today is native Americans," Hawks says. "They're not closely related, but they may have experienced similar environments to the extent that they might have been isolated from diseases that came from Africa and South Asia."

Monday, December 29, 2008

Anatomically modern humans, in the kitchen, with a lead pipe.


This interesting modeling technique reveals clues that point to extinction most foul.

Competition, Not Climate Change, Led To Neanderthal Extinction, Study Shows
The researchers conclude that the Neanderthal populations that occupied what is now southern Spain were the last to survive because they were able to avoid direct competition with modern humans since the two populations exploited distinct territories during the cold climatic conditions of H4. They also point out that during this population event contact between Neanderthals and modern humans may have permitted cultural and genetic exchanges.

Friday, August 8, 2008

Neanderthal Mitochondrial DNA Sequenced



Mitochondrial DNA places the human/neanderthal split at 660K years ago, with no or very rare interbreeding likely.




Leg bone yields DNA secrets of man's Neanderthal 'Eve' | Science | The Guardian
Researchers at the Max-Planck Institute for Evolutionary Anthropology in Leipzig, Germany, read the complete sequence of DNA held in tiny biological powerhouses called mitochondria, which provide energy for cells. The mitochondria are only passed down the female line, so can be used to trace the species back to an ancestral "Eve", the mother of all Neanderthals. The team analysed the DNA of 13 genes from the Neanderthal mitochondria and found they were distinctly different to modern humans, suggesting Neanderthals never, or rarely, interbred with early humans. The genetic material shows that a Neanderthal "Eve" lived around 660,000 years ago, when the species last shared a common ancestor with humans.

Wednesday, April 16, 2008

Neanderthals Voice


Neanderthals sounded like Eric Cartman. Interesting.

Neanderthals speak out after 30,000 years - being-human - 15 April 2008 - New Scientist
Talk about a long silence – no one has heard their voices for 30,000 years. Now the long-extinct Neanderthals are speaking up – or at least a computer synthesiser is doing so on their behalf.