Early Humans Bred with Denisovans

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Early Humans Bred with Denisovans

Postby Bart Stewart » Fri Mar 16, 2018 7:51 pm

Fascinating article here on a study, some call it a breakthrough, that says humans mated with the Denisovans as well as the Neanderthals. Denisovans are the little-understood bipedal primates that always seem to have the word mysterious tacked onto their name. I recall reading elsewhere about them that they were thought to have been quite rare, as compared to Neanderthals. So it is a little surprising that there was widespread interbreeding with them, which occurred in at least two waves.

Extensive interbreeding happened with the Neanderthals. Huge segments of the population carry Neanderthal genes. What difference it may make in practical terms we don't know. (Or at least I don't know.)

A tweet I saw about this article added more mystery. It said, "A quarter of the chunks of ancient DNA that Browning found in living humans didn’t match either Neanderthal or Denisovan DNA. So, we may have also had children w/other, unidentified hominins.

https://www.theatlantic.com/science/arc ... urce=atltw

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Re: Early Humans Bred with Denisovans

Postby Gawdzilla Sama » Fri Mar 16, 2018 8:00 pm

Chachacha wrote:"Oh, thweet mythtery of wife, at waft I've found you!"

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Re: Early Humans Bred with Denisovans

Postby ElectricMonk » Fri Mar 16, 2018 9:42 pm

It seems to me that the better genomic data we have on early human variants, the more we can identify their DNA in modern humans: homo sapiens was obviously not picky in what was deemed {!#%@}.
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Re: Early Humans Bred with Denisovans

Postby OlegTheBatty » Fri Mar 16, 2018 9:44 pm

Still aren't
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Re: Early Humans Bred with Denisovans

Postby TJrandom » Fri Mar 16, 2018 10:27 pm

OlegTheBatty wrote:Still aren't
... in Texas! :lol:

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Re: Early Humans Bred with Denisovans

Postby bobbo_the_Pragmatist » Fri Mar 16, 2018 11:11 pm

Genetic variability is good...... as a general rule.
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Re: Early Humans Bred with Denisovans

Postby Gawdzilla Sama » Fri Mar 16, 2018 11:20 pm

Changing environment influenced human evolution
By Mary Halton
Science reporter, BBC News

Humans may have developed advanced social behaviours and trade 100,000 years earlier than previously thought.

This is according to a series of papers published today in Science.

The results come from an archaeological site in Kenya's rift valley. "Over one million years of time" is represented at the site, according to Rick Potts from the Smithsonian Institution, who was involved in the studies.

There are also signs of developments in toolmaking technologies.

Environmental change may have been a key influence in this evolution of early Homo sapiens in the region of the Olorgesailie dig site.


Continues...
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Re: Early Humans Bred with Denisovans

Postby landrew » Thu Jul 19, 2018 2:47 am

This makes a mess out of ancestral land claims.
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Re: Early Humans Bred with Denisovans

Postby landrew » Thu Aug 09, 2018 3:02 pm

bobbo_the_Pragmatist wrote:Genetic variability is good...... as a general rule.

In an alternate universe, that would violate eugenics laws.
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Re: Early Humans Bred with Denisovans

Postby landrew » Thu Aug 09, 2018 3:07 pm

Gawdzilla Sama wrote:Changing environment influenced human evolution
By Mary Halton
Science reporter, BBC News

Humans may have developed advanced social behaviours and trade 100,000 years earlier than previously thought.

This is according to a series of papers published today in Science.

The results come from an archaeological site in Kenya's rift valley. "Over one million years of time" is represented at the site, according to Rick Potts from the Smithsonian Institution, who was involved in the studies.

There are also signs of developments in toolmaking technologies.

Environmental change may have been a key influence in this evolution of early Homo sapiens in the region of the Olorgesailie dig site.


Continues...

Can't say this doesn't square with the "absence of evidence not proving evidence of absence" thing.
Every year new findings are dashing firm declarations of "what wasn't" on the rocks.
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Re: Early Humans Bred with Denisovans

Postby OlegTheBatty » Thu Aug 09, 2018 5:23 pm

In the analyses of all these DNA sharing studies, I've not seen any discussion of horizontal gene transfer. Has anyone?
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Re: Early Humans Bred with Denisovans

Postby landrew » Thu Aug 09, 2018 5:24 pm

OlegTheBatty wrote:In the analyses of all these DNA sharing studies, I've not seen any discussion of horizontal gene transfer. Has anyone?

I assume you are referring to cross-breeding?
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Re: Early Humans Bred with Denisovans

Postby Austin Harper » Thu Aug 09, 2018 5:27 pm

I don't know about you, but I'm usually horizontal for gene transfer.
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Re: Early Humans Bred with Denisovans

Postby OlegTheBatty » Thu Aug 09, 2018 5:32 pm

. . . with the satisfied air of a man who thinks he has an idea of his own because he has commented on the idea of another . . . - Alexandre Dumas 'The Count of Monte Cristo"

There is no statement so absurd that it has not been uttered by some philosopher. - Cicero

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Re: Early Humans Bred with Denisovans

Postby bobbo_the_Pragmatist » Thu Aug 09, 2018 5:34 pm

landrew wrote:
bobbo_the_Pragmatist wrote:Genetic variability is good...... as a general rule.

In an alternate universe, that would violate eugenics laws.

I don't really know what you mean to say, but I'm prompted to reply that I see eugenics as a value or set of techniques....not a "law" in any sense.
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Re: Early Humans Bred with Denisovans

Postby OlegTheBatty » Thu Aug 09, 2018 5:36 pm

bobbo_the_Pragmatist wrote:
landrew wrote:
bobbo_the_Pragmatist wrote:Genetic variability is good...... as a general rule.

In an alternate universe, that would violate eugenics laws.

I don't really know what you mean to say, but I'm prompted to reply that I see eugenics as a value or set of techniques....not a "law" in any sense.


It's illegal in some places. I would consider that a law in some sense.
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Re: Early Humans Bred with Denisovans

Postby landrew » Thu Aug 09, 2018 9:36 pm

OlegTheBatty wrote:
bobbo_the_Pragmatist wrote:
landrew wrote:
bobbo_the_Pragmatist wrote:Genetic variability is good...... as a general rule.

In an alternate universe, that would violate eugenics laws.

I don't really know what you mean to say, but I'm prompted to reply that I see eugenics as a value or set of techniques....not a "law" in any sense.


It's illegal in some places. I would consider that a law in some sense.

I was referring to the world we'd have if the other side had won WWII.
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Re: Early Humans Bred with Denisovans

Postby bobbo_the_Pragmatist » Thu Aug 09, 2018 10:18 pm

OlegTheBatty wrote:It's illegal in some places. I would consider that a law in some sense.

I hadn't remembered that...…...mostly because its not illegal in Western Countries? People free to abort on whatever basis they want?

……...So, its not an alternate universe, but rather our own?
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Re: Early Humans Bred with Denisovans

Postby TJrandom » Fri Aug 10, 2018 1:59 am

Austin Harper wrote:I don't know about you, but I'm usually horizontal for gene transfer.


In Texas, only the heifer is horizontal - or so I have heard.. or is that herd. ;)

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Re: Early Humans Bred with Denisovans

Postby ElectricMonk » Fri Aug 10, 2018 5:09 am

We knew that humans and dinosaurs lived together. I guess it was inevitable that they also {!#%@} each other.
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Re: Early Humans Bred with Denisovans

Postby landrew » Fri Aug 10, 2018 7:55 pm

ElectricMonk wrote:We knew that humans and dinosaurs lived together. I guess it was inevitable that they also {!#%@} each other.

And this was the result:
Image
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