A review of Denisovan DNA in modern humans

[RonO]

https://www.sciencedaily.com/releases/2024/11/241108113302.htm

https://www.nature.com/articles/s41588-024-01960-y
The Nature article is paywalled.

Unlike the Neanderthal interbreeding that may have been a single event
that resulted in the Neanderthal DNA that modern human populations have
there is pretty good evidence that multiple interbreeding events in
different parts of the world occurred between modern humans and
Denisovans. They identify 4 distinct populations of Denisovans that may
have interbred with modern humans. The overhype of the Science Daily
article includes South America as a possible place where Denisovans may
have existed, but the evidence for this in the review article was
minimal. They could have made it over to America, but didn't leave much
evidence of their existence. Denisovans probably lived through around 5
ice ages in Asia. So there were likely as many chances to get over to
America as there was to get to the Philippines and New Guinea. The
review claims that better analytical methods need to be developed to
figure out where the Denisovan DNA came from in South America. The
Denisovans interbred with Asians multiple times, and there is even the
possibility that the bits of genome came over with genomes coming in
after the European colonization.

Ron Okimoto

[x]

Post by RonO
https://www.sciencedaily.com/releases/2024/11/241108113302.htm
https://www.nature.com/articles/s41588-024-01960-y
The Nature article is paywalled.
Unlike the Neanderthal interbreeding that may have been a single event
that resulted in the Neanderthal DNA that modern human populations have
there is pretty good evidence that multiple interbreeding events in
different parts of the world occurred between modern humans and
Denisovans.  They identify 4 distinct populations of Denisovans that may
have interbred with modern humans.  The overhype of the Science Daily
article includes South America as a possible place where Denisovans may
have existed, but the evidence for this in the review article was
minimal.  They could have made it over to America, but didn't leave much
evidence of their existence.  Denisovans probably lived through around 5
ice ages in Asia.  So there were likely as many chances to get over to
America as there was to get to the Philippines and New Guinea.  The
review claims that better analytical methods need to be developed to
figure out where the Denisovan DNA came from in South America.  The
Denisovans interbred with Asians multiple times, and there is even the
possibility that the bits of genome came over with genomes coming in
after the European colonization.
Ron Okimoto

Yes there was something called a 'modern human' at the time that
was totally, totally different from these other primitive apish beings.

We know this because Bill and Ted took these guys to the phone booth
next to the Circle K.

[JTEM]

Post by RonO
Unlike the Neanderthal interbreeding that may have been a single event
that resulted in the Neanderthal DNA that modern human populations have

Kind of difficult, that, seeing how native Americans carry DIFFERENT
Neanderthals DNA. Also Neanderthals & Denisovans interbred, which
means they had to pick up Neanderthal DNA from the Denisovans...

The problem is that modern DNA is NOT I repeat NOT a map of paleo
interbreeding. We know for a fact that the models they are trying
to enforce here are false. We know it. It's just plain WRONG.

HINT: It is generally estimated that, even with descendants, it
would only take about a thousand years to erase you from the gene
pool. Couldn't change the fact that he had lived, or that you had
surviving descendants, but genetically you'd be gone.

You require scenarios where descendants are interbreeding with
other descendants in order to keep any DNA going...

Best example: A man has two children, both daughters. There. In
a single generation his mtDNA and y-chromosome are erased. After
two generations three quarters of his DNA remaining AFTER the mtDNA
and y-chromosome is also gone...

Post by RonO
there is pretty good evidence that multiple interbreeding events
in different parts of the world occurred between modern humans and
Denisovans.

Actually, there's pretty strong evidence for multiple Denisovan
populations about as distantly related to each other as they are
Neanderthals. So, again, the model sucks.

Post by RonO
They identify 4 distinct populations of Denisovans that
may have interbred with modern humans.

"Modern humans" is a misnomer anyways. It's a cultural distinction,
a "Let's all feel good about ourselves" social program.