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Neandertal DNA from cave mud shows two waves of migration across Eurasia
Science News ^ | April 15, 2021 | Charles Choi

Posted on 04/21/2021 10:10:41 AM PDT by SunkenCiv

To extract ancient human chromosomal DNA from caves, Vernot and colleagues identified regions in chromosomes rich in mutations specific to hominids to help the team filter out nonhuman DNA. This helped the researchers successfully analyze Neandertal chromosomal DNA from more than 150 samples of sediment roughly 50,000 to 200,000 years old from a cave in Spain and two caves in Siberia.

After the team compared its data with DNA previously collected from Neandertal fossils of about the same age, the findings suggested that all these Neandertals were split into two genetically distinct waves that both dispersed across Eurasia. One emerged about 135,000 years ago, while the other arose roughly 105,000 years ago, with one branch of the earlier wave giving rise to all the later groups examined.

In the Spanish cave, the researchers found genetic evidence of both groups, with the later wave apparently replacing the earlier one. “There were signs based on the mitochondrial DNA of this turnover, but seeing it clearly with the nuclear DNA is really exciting,” says paleogeneticist Qiaomei Fu at the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing, who did not take part in this study.

The later wave may be linked with the emergence of the last “classic” stage of Neandertal anatomy, skeletal features such as a bulge at the back of the skull that may indicate strong neck muscles or enlarged brain regions linked to vision, the researchers say. This later wave may have coincided with cooling and other environmental changes that came with the advent of the last ice age, they note.

(Excerpt) Read more at sciencenews.org ...


TOPICS: History; Science; Travel
KEYWORDS: baboonmarker; elainemorgan; fallsmainlyinthecave; godsgravesglyphs; helixmakemineadouble; multiregionalism; neandertal; neandertals; neanderthal; neanderthals
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To: SunkenCiv

The original White Flight.


21 posted on 04/21/2021 12:26:21 PM PDT by Mr. Blond
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To: SunkenCiv

This is why you have to close the toilet lid after you go to the bathroom.

A thousand years from now, some guy will be tracing you urine droplets and figuring out that you were drinking at work.


22 posted on 04/21/2021 12:30:27 PM PDT by blueunicorn6 ("A crack shot and a good dancer”)
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To: PIF

Actually I think the steam engine preceded internal combustion engine.


23 posted on 04/21/2021 12:36:00 PM PDT by entropy12 (Thanks President Trump for WARP SPEED availability of covid vaccines.)
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To: dainbramaged

So, why the spelling change? It does change the pronunciation of the word.


24 posted on 04/21/2021 12:40:50 PM PDT by Jemian (War Eagle!)
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To: Jemian

I went to West Germany years ago. Biught some Rosenthal china. They pronounced it “RosenTALL.” Silent “H.”


25 posted on 04/21/2021 1:34:24 PM PDT by PghBaldy (12/14 - 930am -rampage begins... 12/15 - 1030am - Obama's advance team scouts photo-op locations.)
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To: SunkenCiv

The reason why neanderthals generally lost out to African humans is that neanderthals lived in isolated communities while African humans interacted. The interaction caused viral epidemics which shortened lives. The arrangement inoculated African humans against the viruses. The shortened lifespans of African humans hastened evolutionary advances.


26 posted on 04/21/2021 1:37:06 PM PDT by nagant
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To: PIF

#18 Democrat like politicians were in the way of progress.


27 posted on 04/21/2021 2:14:37 PM PDT by minnesota_bound (I need more money. )
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To: entropy12

I guess without guns, without anti-biotics, without decent shelters, without agriculture, they were simply busy surviving lions, lack of reliable food supply, covid-18 (lol), the ice age etc.


Would you sit around some cave camp fire, shivering in the dark for 290 thousand years or would you have gotten off your frozen butt and done something about it?

Remember, if humans disappeared today, our ‘civilization’ would be dust, sky scrappers and all in 10,000 years. In 50,000 years, the dust would have been recycled many times. Then add in a world wide ice age scrapping off whatever remained, then the ice melting and drowning the very place where most people live - the costs and rivers - under hundreds of feet of mud and sediment.

It only takes 6000 years at most for a civilization to arise. Then, if every one failed and collapsed at 6,000 years, they would be gone after another 10,000 years passed. So that’s 16000 years. 293,000,000 / 16000 = 17 civilizations arose and gone before ours being the 18th.

just think about it before piling on.


28 posted on 04/21/2021 2:44:32 PM PDT by PIF (They came for me and mine ... now its your turn)
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To: nagant

Not at all. Neandertal is in everyone’s DNA, including modern Africans. They are your and my ancestors.


29 posted on 04/21/2021 10:03:32 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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To: SunkenCiv

Some DNA studies have placed Neanderthal contribution to modern human DNA at about 3 percent. That’s why I said that Neanderthals “generally” lost out to African humans. I’m sure though, that percentage would differ by region.


30 posted on 04/22/2021 3:54:23 AM PDT by nagant
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To: nagant

There’s more Neandertal in there than in 18 of your great-great-great-great-grandparents’.


31 posted on 04/22/2021 10:54:01 PM PDT by SunkenCiv (Imagine an imaginary menagerie manager imagining managing an imaginary menagerie.)
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