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Thread: Median-Joining Network divergence estimates for Haplogroups

  1. #1
    Regular Member zanipolo's Avatar
    Join Date
    22-03-11
    Posts
    2,071

    Y-DNA haplogroup
    T1a2 - Z19945
    MtDNA haplogroup
    K1a4o

    Ethnic group
    Down Under
    Country: Australia



    Median-Joining Network divergence estimates for Haplogroups

    I recently was noticing there was a lot of information in regards to Median-Joining Network divergence estimates for certain Haplogroups.
    This median from what i can gather can predict when a haplotype entered an area, as an example, T ( old K2) entered cornwall and Wales for the first time in 236 CE, while G2 entered England in 443 BCE. With this we can summise that G2 arrived before the Romans, and T while the Romans where in Britain.

    If I understand this can also be used with ancient languages entering an area

    http://archiver.rootsweb.ancestry.co...-10/1160079311

    I think only 37 and 67 markers can be used to calculate these "creation" times

    http://www.flickr.com/photos/archaeogenetics/277501041/

    http://www.plosone.org/article/info%...l.pone.0041252

    I was wondering if anyone has any knowledge on this topic
    Father's Mtdna H95a1
    Grandfather Mtdna T2b24
    Great Grandfather Mtdna T1a1e
    GMother paternal side YDna R1b-S8172
    Mother's YDna R1a-Z282

  2. #2
    Great Adventurer sparkey's Avatar
    Join Date
    17-02-11
    Location
    California
    Posts
    2,251

    Y-DNA haplogroup
    I2c1 PF3892+ (Swiss)
    MtDNA haplogroup
    U4a (Cornish)

    Ethnic group
    3/4 Colonial American, 1/8 Cornish, 1/8 Welsh
    Country: USA - California



    Sure, median joining is a useful tool to build phylogenetic trees, and tends to be one of the more accurate tools (more accurate, than, say, probabilistic clustering, which tends to be a little more prone to incorrect tree construction upon convergence). It doesn't really give TMRCAs by itself, though. By building a phylogenetic tree, it helps pinpoint modals for TMRCA models that use them, or otherwise pinpoint clear clusters, so it can be part of the process, particularly if we want to narrow a haplogroup down to its geographic regional clusters.

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