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Thread: Questions about half Oceanian, half European people

  1. #1
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    Questions about half Oceanian, half European people

    Hello everyone,

    I was wondering where would an half European, half Australoid person plot on a PCA plot. Of course, such a question applies to “Euronesians” (i,e. Polynesian-European biracials) as well.

    Any relevant insight is welcome.
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    guess that would depend upon the calculator used...

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     Power77 (03-27-2019)

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    I'd say close to South Asians.
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    If it was a global PCA, they'd cluster near certain South Asians. Keep in mind that the Australasian ancestry in South Asians is tens of thousands of years diverged from that in Oceanians, but AASI and Onge clearly have some kind of phylogenetic relationship to Australo-Melanesians.

    There were a ton of mixed-race people (self-identifying as indigenous Australians) in that recent Australian aborigine paper. You can see the trail to Europe in the PCA below:



    No surprise that they are very mixed. Many self-identifying "Native Americans" in the US are similarly variable, with a lot of mixed-race people and a lot of people that might as well just be "white."
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    I don't think half Australian and half European would be "close" to South Asians in absolute terms. I don't think we can go by those flat 2D Global PCAs which would be losing variance like crazy.

    Here is the 25-D Global25 PCA's direct fit/distance using 50% English and 50% Australian.

    Note how South Asia is pretty red(bad with very high distance). Geographically, however, lat/long 50/50 is in South/Southwest Asia.


    http://185.144.156.77:3000/maps/?dat...duals_weights=

    Closest pops to 50% English + 50% Australian:

    India: Rors @ 26.5, Onge @ 28.3, Paniya @ 30,
    China: Uyghurs @ 27.3, Han @ 48
    Iran: Iran_Persian @ 29
    Saudi @ 32.5
    Russia: Tatar @ 26.5, Kostroma @ 30.3, Yamna_Samara @ 30.8, Sunghir @ 21.7, Ust_Ishim @ 21.5

    So, among the moderns, South/SouthCentral Asians are the closest to that 50-50 mix, but the distance is way too high at over 25 in the scaled sheet.
    Last edited by poi; 03-29-2019 at 06:51 AM.

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    I plotted closest to South Indians on my PCA plot

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    My mom's 1/4 Hawaiian, 3/4 European and got Dr. McDonald to look at her results back in 2012. She's out by herself. I guess her father who would be half Hawaiian, half Portuguese would be directly in the middle.PGA.jpg

    My mom's half sisters are in Gedmatch and are half Hawaiian/Half European. Let me know what I should run if you want to see their results. I'll screen shot and post them.
    Last edited by Osiris; 02-27-2020 at 08:02 PM.
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    Quote Originally Posted by Michalis Moriopoulos View Post
    If it was a global PCA, they'd cluster near certain South Asians. Keep in mind that the Australasian ancestry in South Asians is tens of thousands of years diverged from that in Oceanians, but AASI and Onge clearly have some kind of phylogenetic relationship to Australo-Melanesians.

    There were a ton of mixed-race people (self-identifying as indigenous Australians) in that recent Australian aborigine paper. You can see the trail to Europe in the PCA below:



    No surprise that they are very mixed. Many self-identifying "Native Americans" in the US are similarly variable, with a lot of mixed-race people and a lot of people that might as well just be "white."
    Thats right,and in my case I clustered especially close to South India.

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