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Thread: The origin of the Slavs

  1. #1701
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    Some simple calculations, maps and plots I make for free, but for more complicated maps, plots and calculations I ask for a donation of $2 or 1.7 per map/plot via Hidden Content PayPalHidden Content account.
    Every fourth map is free. Admix decomposition is $7 or 6.

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     vasil (11-25-2021)

  3. #1702
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    Quote Originally Posted by ph2ter View Post
    Here is I-M423 UMAP plot made from Y-DNA STR 37 values of FTDNA users.

    I think it fairly good shows the genetic distance and kinship between various M423 clades:

    Thx for this but what do STRs show more than what SNPs already show?
    Especially the closer distance of BY128 which is a subclade of S17250 to Y18331 rather than PH908 or other S17250* subclades shows why STRs aren't particularly reliable model to calculate distance between different yDna profiles.

    At least in this situation the good thing is that you can see which subclades had bigger founder effect and more descendants by just looking how far drifted away a certain subclade is from the core. In this case this is especially evident for PH908.
    Last edited by Aspar; 11-25-2021 at 12:32 PM.
    Target: Aspar_scaled
    Distance: 1.9646% / 0.01964602 | ADC: 1x RC
    57.6 Macedonian
    42.4 Greek_Central_Macedonia

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     vettor (11-25-2021)

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    Quote Originally Posted by Aspar View Post
    Thx for this but what do STRs show more than what SNPs already show?
    Especially the closer distance of BY128 which is a subclade of S17250 to Y18331 rather than PH908 or other S17250* subclades shows why STRs aren't particularly reliable model to calculate distance between different yDna profiles.

    At least in this situation the good thing is that you can see which subclades had bigger founder effect and more descendants by just looking how far drifted away a certain subclade is from the core. In this case this is especially evident for PH908.
    You already said why.
    From SNP tree I cannot tell how much Y18331 and PH908 drifted away from the core and how big the founder effect they experienced.
    And that it is possible to get the outline of the SNP tree from the STR values is fascinating, at least to me.
     
    Some simple calculations, maps and plots I make for free, but for more complicated maps, plots and calculations I ask for a donation of $2 or 1.7 per map/plot via Hidden Content PayPalHidden Content account.
    Every fourth map is free. Admix decomposition is $7 or 6.

  6. The Following 2 Users Say Thank You to ph2ter For This Useful Post:

     Aspar (11-25-2021),  Riverman (11-25-2021)

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