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European researchers claim that on average Europeans are 4% Neanderthal. Italian anthropological geneticist, Cavalli-Sforza also claims that the gene pool of Europeans also consists of 35% African genes and approximately 65% Asian genes. Presumably that 4% Neanderthal genes is included in the 65% Asian genes.
Add to the above the fact that only Haplogroup I is strictly indigenous to Europe-i.e. Northern Europe. But R, E, and J are found not only in Europe abut also in Africa.
The point is that if Europeans are 35% African in genome then that would mean that individuals who are 50% white, 50% black are actually 17% white approx.
Does this calculation solve the puzzle as to why the 50% white black mix statistically seem more black than white phenotypically?
Example. Famous German tennis star(retired, Boris Becker has a son who is 1/8 black yet experiences racial observations that would be normally unexpected.
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So no northern Africans can be white? The African part is black African? How do you know what phenoype these Africans had?
Posts: 2508 | From: . | Registered: Nov 2011
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Actually the genetic distance between Africa and Europe is closest based upon "classical Polymorphism" ie STRs(LD). Europeans are more African than Asian. What Sforza is trying to do in the write up is "spin" and wiggle out of that FACT he observed. 1/3 African? No!!!!! 2/3 African!!!! As far as "looks" and phenotype...can't help you’re here Maybe someone who is more into "look like and African" can contribute.
-------------------- Without data you are just another person with an opinion - Deming Posts: 12143 | From: When you have eliminated the impossible, whatever remains, however improbable | Registered: Jun 2007
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quote:So no northern Africans can be white? The African part is black African? How do you know what phenoype these Africans had
The phenotype archaic Africans had would be what you would find today with the Fijians, New Guineans and other Melanesians. Those people left Africa about the same time others left, but for cooler cooler climes. Hence the adaptations.
My point is that if a person from, say, Sweden looks white plus his/her family--then that person is white--but their genome would be at least 35% African. The same principle holds for those North Africans who look white.
Posts: 5492 | Registered: Nov 2004
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My point is that if a person from, say, Sweden looks white plus his/her family--then that person is white--but their genome would be at least 35% African. The same principle holds for those North Africans who look white.
No, their genome is not 35% African. You are miscounting an old 1997 quote from Cavalli-Sforza which pertains to the ancestors of Europeans 50,000 or so years ago. Since then they have evolved under different environmental conditions their and their genome is no longer African to that extent.
A person who is 1-4% Neanderthal would not carry much Neanderthal ancestry Detractors have argued and continue to argue that the signal of Neanderthal interbreeding may be due to ancient African substructure, meaning that the similarity is only a remnant of a common ancestor of both Neanderthals and modern humans and not the result of interbreeding
Why do East Asians have 20% more Neanderthal DNA than Europeans? Carl Zimmer | New York Times | February 23, 2015
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Genomes of certain populations, such as Papuan individuals, contained about 5% Denisovan ancestry a sister group to Neanderthals, remains found in Siberia
Posts: 42919 | From: , | Registered: Jan 2010
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Most scientific theories provoke alternative theories. Most likely, you never read Thomas Kuhn's Structure of Scientific Revolutions or even heard of the phrase "scientific paradigm".
It is now standard theory that there was interbreeding between Neanderthals and the incoming "homo sapiens Africanus". The Neanderthals lived not only in Europe proper but in Eurasia. The fact that Neanderthal genes are not as widespread in Africa as in Eurasia proves the point.
Given that Homo Sapiens Sapiens lived in Africa for at least 120,000 years before some groups migrated in East and North-East directions, it is evident that those who left some 60,000-70,000 years ago carried genomes packed with African genes.
Clearly, those genes impacted on by the changing environments would be subjected to the principle of "Natural Selection" while others not so impacted would remain stable. Those that remained constant would be the older African genes--as in the case of the human ABO blood group.
Carvalli-Sforza proposed a robust argument. Posts: 5492 | Registered: Nov 2004
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First, "Sub-Saharan" is a racist, Eurocentric term. When speaking of Africa objectively, one should use West African, North African, East African, and Southern African. What attributes do Senegalese and Swazis share?
Second, the reference is to the genes that those Africans carried with them as they left Africa some 50-60,000 years ago to populate Europe and Asia.
What did those Africans look like? Like the people who now live in Fiji, the Solomon Islands, and New Guinea.
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[b] Clearly, those genes impacted on by the changing environments would be subjected to the principle of "Natural Selection" while others not so impacted would remain stable. Those that remained constant would be the older African genes--as in the case of the human ABO blood group.
What are the names of the genes that remained constant?
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The human genome is some 20-24,000 genes . Answer: all the genes except those that code for melanin pigmentation, hair form, hair color, and eye color.
Posts: 5492 | Registered: Nov 2004
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quote:Originally posted by lamin: The human genome is some 20-24,000 genes . Answer: all the genes except those that code for melanin pigmentation, hair form, hair color, and eye color.
what are the African haplogroups that 35% of the European genome is comprised of?
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ABO blood groups aren't neutral, they affect disease susceptibility. It is certainly not only pigmentation that is under selection but also adaptations to disease, diet, altitude, and many other things.
Posts: 660 | From: Canada | Registered: Mar 2017
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“what are the African haplogroups that 35% of the European genome is comprised of?”
All Europeans genes are from Africa.
Pigmentation – SLC45A2 and SLC24A5 is of African origin – Tishkoff and Henn 2017, Beleza 2012 Eye color – HERC2. Found in East Africa. Other genes code for different color eyes in Africans. Wassermann et al Bantus with Blue Eyes thread on ESR Hair texture – EDAR found in West Africans and other genes coding for hair texture in Europeans also found in West Africans Freckling - gene found in West Africans but not noticeable because of dark skin tone of Africans Red/Blond hair - ?? but found in some Africans.
The environment has a greater impact than we are led to believe currently
-------------------- Without data you are just another person with an opinion - Deming Posts: 12143 | From: When you have eliminated the impossible, whatever remains, however improbable | Registered: Jun 2007
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quote:Originally posted by Oshun: So no northern Africans can be white? The African part is black African? How do you know what phenoype these Africans had?
No such thing as a white African, unless you're referring to our indigenous albinos.
-------------------- “Three things cannot be long hidden: the sun, the moon, and the truth.” Posts: 195 | From: Southern Africa(Azania) | Registered: Mar 2017
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