dinsdag 27 december 2011

Draft phylogenetic tree of Y-DNA SNP Z36 and possible route of ancestors.

Addition January 21 2012:

Today, I received very nice Phylogenetic tree network results using free fluxus engineering software as made by Tibor Fehér, one of the administrators of the Family Tree U152 project. His tree is shown hereafter:



















I was able to reproduce his results by using the free software (except for the nice layout). My compliments for his work! According to this network analyses, my STR markers (blue spot) appear more related to the Italian members (green) than the Britisch Isles members (yellow). So, a fair chance exists being positive for the Z36 downstream SNPs. Also Z36 is now estimated 3900 years old (+/- 700 years), which is much older as determined using Tim Janzens method.

These results put the previous blog in a different perspective ... (read hereafter), but partly may still be of interest so I will not delete it.

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While investigating the y chromosomal STR Dys values of Z36+ cousins, I attempted to create a phylogenetic tree of the respective members (source Family Tree DNA R-U152 project). Before doing so, the mosty likely ancestor DNA was postulated, (average of all members) and then deviations were recorded. Although the TMRCA of the complete Z36 group seems about 825 BC, while varying the subgroups, the common ancestor appears to be older (1150 BC).

Apparantly, some STR markers correlate with specific groups. Such as Dys 389-2, which has 29 repeat sequences for most members, but is 30 for the Czech and Hungarian - and 31 for the Scottish group. Other discriminating Dys regions include 389-1, 458 and 481. Part of the draft results are shown hereafter but you can also review the weblink.



Draft Phylogenetic Tree using STR Dys values as published by Family Tree DNA. Top row: STR markers. Second row: published mutation frequencies as expressed in generations. Third row, postulated Dys values of common ancestor (number of repeats of specific STRs). Green numbers: similar to ancestor. Yellow numbers: Dys values +/- 1. Red numbers: Dys values +/- 2 or more as compared to ancestor. Dates AD or BC: postulated date common ancestor using Janzens TMRCA spreadsheet. 

Interestingly, my Dys values appear to match the best with a descendant of Laurence Strang, who lived at the Shetland Islands (1680). When using the TMRCA calculations, a common ancestor at 500 AD is predicted. Of course, the most obvious route is from Germany to Belgium crossing the Canal to the UK and then up North. However, since no Z36+ members are found in the Southern part of the UK yet, I currently favour an alternative route: from Germany to Denmark/Norway? and then to Scotland/Shetland Isles and to Northern France/Belgium. This idea needs validation by finding Z36+ members from Scandinavia and by finding matches with downstream (Scottish) SNPs. The current 4 Danish members all belong to L2+, which is a different U152 subclass.





















You may find the Google Z36+ map here. Is the Recourt family descending from a Celtic tribe in Denmark, which became a subpopulation of the Vikings? Scandinavian settlements dating from the 9-10th century are found in Normandy, but also at the Shetland Isles, Scotland, Ireland and England.
















Sources:
http://en.wikipedia.org/wiki/Viking
http://en.wikipedia.org/wiki/Viking_expansion
http://en.wikipedia.org/wiki/Scandinavian_Scotland
See also:  http://www.davidkfaux.org/Cimbri-Chronology.pdf

These developments may also shed light on the "Recent Ancestral Origins" data, which is a service of Family Tree DNA. A graph displaying the percentage of exact 12 markers matches for each region is shown hereafter (update 20 november 2012).




















Clearly, the proposed homeland region Switserland displays the highest percentage of 12/12 matches, followed by Scotland, Northern Ireland and Wales. These latter regions are believed to be populated with a relative high percentage of remaining Celtic descendants.

And tonight, the first Z36 meeting was held to discuss recent developments. A kind of family reunion :)






















On the right: Gerard, descendant of Peter Hugenholdt (Germany) and on the left Kees, descendant of Dirk van Roucourt (Belgium). We found out that we live very close to each other and even share friends.   

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