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Author Topic: Are Africans the only pure "humans"?
Frankly Kemet
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I have never been able to fully wrap my head around the claim Africans are the only pure humans or the idea of a pure human for that matter. To me, it defies logic and reason. But I am no scientist. If you have never heard the claim, it is made by a scientist who gives a lecture on the human genome. Here is the video (fast forward to frame: 03:00.)

https://www.youtube.com/watch?v=zKaBBB-3M7Y

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xyyman
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Africans, Europeans, Asians, Dravidian, Mexicans etc are all "pure" humans. Why? All are a subset of Africans. @K2 this is pretty clear. Will you stop it. And if you are hinting at Neanderthal or Dravidian admixture Africans do have "supposed Neanderthal and Denisovan admixture by latest studies. But really it is not Admixture from pre-modern humans it is remnants of DNA material from the ancestors of BOTH modern humans and Neanderthals that is still in pour DNA. It was harder to detect in Africans because of recombination and high diversity of Africans. But it was "discovered".

Now will you take it someplace else.

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Without data you are just another person with an opinion - Deming

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Frankly Kemet
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First off, @K2?

Second, why the hostility?


quote:
Originally posted by xyyman:
Africans, Europeans, Asians, Dravidian, Mexicans etc are all "pure" humans. Why? All are a subset of Africans. @K2 this ios pretty clear. Will you stop it. And if you are hinting at Neanderthal or Dravidian admixture Africans do have "supposed Neanderthal and Denisovan admixture by latest studies. But really it is not Admixture from pre-modern humans it is remnants of DNA material from the ancestors of BOTH modern humans and Neanderthals that is still in pour DNA. It was harder to detect in Africans because of recombination and high diversity of Africans. But it was "discovered".

Now will you take it someplace else.


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xyyman
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bait threads

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Without data you are just another person with an opinion - Deming

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Frankly Kemet
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quote:
Originally posted by xyyman:
bait threads

How is it a bait thread? Why did you even participate if you felt it was?
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xyyman
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Clarify points to lurkers. OOA is a subset of humans that remained in Africa.

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Without data you are just another person with an opinion - Deming

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Frankly Kemet
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quote:
Originally posted by xyyman:
Clarify points to lurkers. OOA is a subset of humans that remained in Africa.

OoA is subset of humans? Is this your own thinking on the subject or is backed by an authority of the subject?
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capra
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Neanderthals and Denisovans are humans too.

if you mean pure Homo sapiens in the sense of a clade downstream of Neanderthal-Denisovan branch splitting off, if such a thing exists, then we don't know if Africans are 'pure' for sure but probably not.

analysis of modern African genomes points to small amounts of archaic human ancestry.

http://www.pnas.org/content/108/37/15123.short

in the case of Eurasians the admixture can be confirmed because we have aDNA from Neanderthals and Denisovans, but we do not have DNA from African archaic humans.

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Frankly Kemet
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You share my sentiment. It boggles my mind that that scientist would even suggest such a thing. It appears more like he is pandering to Blacks and has framed the scientific discussion politically.


quote:
Originally posted by capra:
Neanderthals and Denisovans are humans too.

if you mean pure Homo sapiens in the sense of a clade downstream of Neanderthal-Denisovan branch splitting off, if such a thing exists, then we don't know if Africans are 'pure' for sure but probably not.

analysis of modern African genomes points to small amounts of archaic human ancestry.

http://www.pnas.org/content/108/37/15123.short

in the case of Eurasians the admixture can be confirmed because we have aDNA from Neanderthals and Denisovans, but we do not have DNA from African archaic humans.


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lamin
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@Kemet.

Africans are the most genetically diverse people in the world and they shared genes with hominims such as Homo Erectus.

https://en.wikipedia.org/wiki/Recent_African_origin_of_modern_humans

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Tukuler
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The riae of Y hg A00 is much earlier
than the previous nrY Adam and all
Homo sapiens sapiens fossils.

Nigeria 's Iwo Eleru fossil and the
Ishango fossil of the Congo have
some archaic features.

Tishkoff and Hammer propose archaic
remnants in Biaka and Baka Africans.

The MUC7 gene implies archaic infusion.
"likely originated in an unknown African
hominin population and introgressed into
ancestors of modern Africans.
" Xu (2017)

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Intellectual property of YYT al~Takruri © 2004 - 2018. All rights reserved.

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DD'eDeN
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xyyman: " But really it is not Admixture from pre-modern humans it is remnants of DNA material from the ancestors of BOTH modern humans and Neanderthals that is still in pour DNA."
-

Philippine Mamanwa have 6% denisovan,
other Philippine groups haven't.

How do you make sense of that?

I do in this way:
Mamanwa = Papawa/Papua/Mbabra(Mbabaram Queensland)/Sumbawa/Sumba/Sunda, Yali/Bali Pygmies arrived first, passing through Flores where they met Flores Hobbits who apparently were Denisovans.

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xyambuatlaya

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DD'eDeN
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Genomic structure of the native inhabitants of Peninsular Malaysia and North Borneo suggests complex human population history in Southeast Asia
Chee‑Wei Yew et al.

Abstract
Southeast Asia (SEA) is enriched with a complex history of peopling. Malaysia, which is located at the crossroads of SEA, has been recognized as one of the hubs for early human migration. To unravel the genomic complexity of the native inhabitants of Malaysia, we sequenced 12 samples from 3 indigenous populations from Peninsular Malaysia and 4 native populations from North Borneo to a high coverage of 28–37×. We showed that the Negritos from Peninsular Malaysia shared a common ancestor with the East Asians, but exhibited some level of gene flow from South Asia, while the North Borneo populations exhibited closer genetic affinity towards East Asians than the Malays. The analysis of time of divergence suggested that ancestors of Negrito were the earliest settlers in the Malay Peninsula, whom first separated from the Papuans ~ 50–33 thousand years ago (kya), followed by East Asian (~ 40–15 kya), while the divergence time frame between North Borneo and East Asia populations predates the Austronesian expansion period implies a possible pre-Neolithic colonization. Substantial Neanderthal ancestry was confirmed in our genomes, as was observed in other East Asians. However, no significant difference was observed, in terms of the proportion of Denisovan gene flow into these native inhabitants from Malaysia. Judging from the similar amount of introgression in the Southeast Asians and East Asians, our findings suggest that the Denisovan gene flow may have occurred before the divergence of these populations and that the shared similarities are likely an ancestral component.

https://link.springer.com/article/10.1007/s00439-018-1869-0

Also, a recent article on "new" aboriginal language of Malaya: Jedek.

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xyambuatlaya

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Frankly Kemet
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quote:
Originally posted by lamin:
@Kemet.

Africans are the most genetically diverse people in the world and they shared genes with hominims such as Homo Erectus.

https://en.wikipedia.org/wiki/Recent_African_origin_of_modern_humans

What are you trying to say? that Black Africans are the only pure humans?
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lamin
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Dummy, there are no pure humans. Quit your stupidity and ignorance.
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Frankly Kemet
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The fact you resort to name calling shows me you are an intellected defeated man. Why not read the responses of some of the discussants? One thinks there are "subsets" of humans.


quote:
Originally posted by lamin:
Dummy, there are no pure humans. Quit your stupidity and ignorance.


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lamin
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The word is "intellectually" not the illiteracy you posted. Just more honest to call spades "spades".
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xyyman
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Source?

Philippine Mamanwa have 6% denisovan,
other Philippine groups haven't.

- got it! I will recap the study I read it before.


quote:
Originally posted by DD'eDeN:
xyyman: " But really it is not Admixture from pre-modern humans it is remnants of DNA material from the ancestors of BOTH modern humans and Neanderthals that is still in pour DNA."
-

Philippine Mamanwa have 6% denisovan,
other Philippine groups haven't.

How do you make sense of that?

I do in this way:
Mamanwa = Papawa/Papua/Mbabra(Mbabaram Queensland)/Sumbawa/Sumba/Sunda, Yali/Bali Pygmies arrived first, passing through Flores where they met Flores Hobbits who apparently were Denisovans.



--------------------
Without data you are just another person with an opinion - Deming

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Frankly Kemet
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quote:
Originally posted by lamin:
The word is "intellectually" not the illiteracy you posted. Just more honest to call spades "spades".

relax. it's a typo. I have a capable command of the English language.
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the lioness,
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no insults please
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the lioness,
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quote:
Originally posted by Doug M:
quote:
Biologists find clues to a 'ghost' species of ancient human in Africa and say interbreeding between early hominin species was 'the norm'

  • Study found a saliva protein in modern sub-Saharan Africans to be very distinct
  • This suggests the ancient species interbred with another archaic human species
  • But, there are no fossils linked to this discovery, making it a 'ghost' species


Ancient human ancestors that can be traced to populations alive today may have engaged in ‘sexual rendezvous’ with a ‘ghost’ species of archaic humans.

In a new analysis of a protein found in saliva, researchers discovered evidence of archaic admixture in modern people living in sub-Saharan Africa, indicating that another species had contributed to the genetic material of their ancestors.

The experts say it appears that interbreeding was common among early hominin species – but, with no fossils of the mysterious species in question, it’s considered a ‘ghost.’

‘It seems that interbreeding between different early hominin species is not the exception – it’s the norm,’ said Omer Gokcumen, PhD, an assistant professor of biological sciences at the University at Buffalo’s College of Arts and Sciences.

‘Our research traced the evolution of an important mucin protein called MUC7 that is found in saliva.

‘When we looked at the history of the gene that codes for the protein, we see the signature of archaic admixture in modern day Sub-Saharan African population.’

The researchers were investigating the purpose and origins of the MUC7 protein.

This protein is, in part, responsible for the slimy consistency of saliva, and helps it to bind to microbes.

http://www.dailymail.co.uk/sciencetech/article-4719274/Biologists-clues-ghost-species-ancient-human.html

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