Recent update regarding distinguishing markers for X2b4 haplogroup as related to descendants of Radegonde Lambert of Acadia

In response to a number of recent questions from project members that I have received lately about the X2b4 mtDNA haplogroup, as related to matrilineal descendants of Acadian ancestor Radegonde Lambert, as traced from mother to mother, I have the following announcement:

The x2b4 mitochondrial DNA haplogroup project information has had a bit of re-organizing. Recently, Tom Glad, who is one of the administrators of the X2b4 mtDNA project, who also manages the X mtDNA project, kindly offered to improve the groupings of the X2b4 findings that we had in place since the project's beginning, and I gladly accepted his help!

As a co-administrator of the X2b4 project, I had noticed while grouping the results that the matrilineal descendants of Radegonde Lambert appeared to "split" from the other results in the project, to the point where they were exclusive to individuals naming Radegonde Lambert as their earliest known ancestor (EKA)!  The markers that Tom Glad "teased out" of the project data, while reorganizing project results, provided insight as to the exact genetic markers that were responsible (in combination, so both must be present in the same set of mtDNA test results): G16145A-C16301T.  

So while the X2b4 subclade is inclusive of a variety of European lineages, as you will find by examining project results, there are two markers that appear to distinguish the X2b4 haplogroup to which descendants of Acadian ancestor Radegonde Lambert belong, and here they are, together:  G16145A-C16301T.  

I have since updated the categorization in the public-facing X2b4 and the Acadian Amerindian Ancestry DNA project pages to include this new grouping mentioned earlier: Haplogroup X2b4 -G16145A-C16301T (Radegonde Lambert Matrilineal Descendants).

Public-facing project data may be found at the following websites:

• Family Tree DNA. X mtDNA Haplogroup Project. https://www.familytreedna.com/groups/x/about/background (accessed 10/5/2023)
• Family Tree DNA. Acadian Amerindian Ancestry DNA Project. https://www.familytreedna.com/groups/acadian-amerindian/about/background. (accessed 10/5/2023) 
• Family Tree DNA. X2b4 mtDNA project. https://www.familytreedna.com/groups/x-2b-4mtdna/about/background. (accessed 10/5/2023).

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