Sunset at Gowanus Bay

Sunset at Gowanus Bay
Sunset at Gowanus Bay, Henry Gritten, 1851

Wednesday, January 22, 2020

New Viewing Options For YFull's YTree

Recent revisions to YFull's YTree have included new viewing options for their individual tree pages. The, very much welcomed, new options were initiated earlier this month. The current version of the YTree is v8.00.00.

Using the "Adam Brouwer Branch," presently defined by the SNP E-Y19643, here is the view, the only view, that we have been accustomed to. You'll note that in the yellow bar at the top of the page there are some new options, "scientific view", and "chart view." The original view is called the "classic view" when one of the other two views are displayed.

Scientific View is a timeline, present to the right, past to the left, on which the various sub-branches of a SNP are placed based upon their Time to Most Recent Common Ancestor, or TMRCA. The current tree has only three sub-branches of E-Y19643, but if we roll it back to an ancestral SNP, say E-V13, formed 8100 years before present (ybp) we can get a better look at how this view works. Here is E-V13 in scientific view.

I like the new chart view the best. The "Adam Brouwer Branch" now in chart view. It is a less ambiguous view than the original classic view which had a point of potential confusion as the parent branch (in this case E-Y19643) was shown twice. In classic view, one might get the impression that E-Y19643 was an equal branch to its sub-branches, rather than a parent branch. That potential confusion is eliminated with the new chart view.



The Lanier-Brewer (I-Y15031) sub-group of the Brewer DNA Project has the most participation and the most sub-branches. Here it is viewed on classic view. Now compare that to chart view.





Much better I'd say.


You may also notice now in the charts that many participants have a little beige box with the letter i in it.



The reason for this is that when Family Tree DNA introduced their BigY-700 test, many participants who had previously taken the original BigY, went back and took advantage of an upgrade offer. That new set of data was then submitted to YFull for their analysis. YFull then issued new id numbers to these new data sets. The id number now seen on the classic view chart is the new id number. Hover your cursor over the little box with the i and you will see the original id number for that participant.

Current members of the Brewer DNA Project who have not upgraded to the BigY-700 test are encouraged to do so. New members are always welcome, especially those who already can show a provable line of ancestry back to a colonial period ancestor. The more participants and the more data the Project has, the better the chances are that the Project can help those who are still working at determining their complete ancestry back to the colonial period. Those interested should contact the administrators of the Brewer DNA Project via links available on the left side of the Project's website.

BGB 670



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