R-Y99978 is a branch on the paternal tree of human kind. It and branches help trace human history from our origin in Africa.
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R-Y99978 Technical Details
This branch is defined by the Y-Haplotree at FamilyTreeDNA as R-Y99978. There, it is the child of the R-Y36311 branch.
I am working on linking information from the public YFull tree. This branch is not linked yet.
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