Mandschure

A new genetic study suggests that Japanese are more mixed with Africans than other East Asians.



Dienekes’ Anthropology Blog: A thousand (and ninety two) genomes

Pacific_Victory

Just out of curiousity, could this be attributed to the Japanese mixing with the Ainu and other natives, who presumably were genetically closer to Africans than the typical East Asian?

Mandschure

Maybe. However there may be a connection between the Y-DNA chromosomes. Japanese and Africans share similar Y-DNA called Y-DNA haplogroup DE.

Y-DNA haplogroup DE is most frequent in Africa, the Andaman Islanders, Himalayas and Japan.

Jhangora

Y Haplogroup D probably has Asian origins. It is also pretty common among Tibetans. May have originated 60,000 years ago. It would be interesting to find out how and why it prospered in the Adamans, Tibet, and Japan and why it didn't do so well in other places in Asia.

Considering that no haplogroup D chromosomes have been found anywhere outside of Asia, according to Wikipedia, how can we be sure that the Japanese have a lot of African admixture? Lots of communities in Africa tend to be very long while on average the Japanese tend to be shorter than their East Asian neighbors?

http://en.wikipedia.org/wiki/Haplogroup_D_%28Y-DNA%29

http://dienekes.blogspot.in/2008/10/...aplogroup.html

Mandschure

Because Y-DNA haplogroup D is a descendant of Y-DNA haplogroup DE* which has been found in Africa. The other descendant of Y-DNA haplogroup DE* is Y-DNA haplogroup E which is the most frequent Y-DNA haplogroup in Africa.

Naomasa298

Given that the ancestors of modern Japanese are believed to have migrated to the islands from around the area that is now Korea, is this also found amongst Koreans?

Jhangora

Ahhh ... going by that definition we are all Africans. We know that the Japanese are not Africans.

I guess you mean the cultural ancestors Naomasa. We are discussing Genetics here. Something which I don't know much about but understand a little bit.

Mandschure

Except other East Asians are not descendants of Y-DNA haplogroup DE*.

Only Japanese are more related to Africans because they are direct descendants of Y-DNA haplogroup DE*.

Koreans are not descendants of Y-DNA haplogroup DE*.

Koreans gave Japanese Y-DNA haplogroup O2b and O3.

Therefore Japanese are mixed whereas Koreans are not mixed.

Jhangora

But Male Haplogroups are just 50% of the story. What about the Japanese Female lineages? Are they African too?



But when the Koreans entered Japan there was no Japan and no Korea. Koreans are certainly mixed too. I think they share their race and blood with the Han Chinese

KingButler

So you guys are still reading stuff from Dienskes blog and his own little interpretations?. I still remember the day when people get their sources from this racist amateur blogger called Robert Lindsay who takes data from scientific studies and than make his own crazy interpretations and conclusions lol

Here is a link to the study ( No interpretations from Dieneskes )
An integrated map of genetic variation from 1,092 human genomes : Nature : Nature Publishing Group

Why only Japanese?

Why not mixed race Columbians who have more East Asian DNA?
Why not so called 100% African who have higher East Asian DNA
Why not Iberians who have higher East Asian DNA
Why not Finnish people who have more African DNA than Siberian?


Seriously last time I checked all the Finnish people DNA chart shows them having 5.86% Siberian/Mongoloid DNA and 0% African DNA, this chart shows having higher African admixture than both Siberian and East Asian... isn't this funny? I mean lot at that chunk, it's even 2x higher than other Europeans and they don't even have any African haplogroups lol

Also why not explain why 100% Africans have higher East Asian DNA?





Tibetans D1 and Tibeto-Burmese D3a but no African admixture.


Why only Japanese are more related with African

Didn't you mtDNA M and N are descendants of African maternal L3. M is marker is found from 20-25% in East and Southeast Asians. N is also found at 3-5% in Asians???

If Japanese are related with Africans than so are Koreans because Koreans have 20% of M and 5% of N.

No... Jomon are genetically closer to Native Americans and old Siberians and Ainu today are predominately Jomon.

Facial reconstruction of Jomon man and women


This admixture doesn't mean there was any interracial admixture like Mandchure tried to interpret.


Japanese have 14% Jomon mtDNA and 36% Jomon Y-DNA.

Aside from mtDNA N9b and M7a, other Jomon lineage according to Japanese scientist are M10, Z, N9B, Y, M8 so on average Japanese have 14% Jomon mtDNA and range from 8.1% to 20%. while for Y-DNA is 26.4%-46.2% so the average for Japanese would be 36%

Ancient Jomon mtDNA

N9b and M7a is the most predominate and found in all 3 Jomon groups sampled.

M7a

1) 7.1%
2) 30%
3) 3.7%

N9b

1) 68%
2) 60%
3) 13%



Japanese mtDNA




The Kanto Jomon have 3.7% M7a but no N9b