I have AncestryDNA matches with two individuals (who are 1st cousins to each other) that imply they are descendants of my paternal grandfather, but not of my paternal grandmother.
The amount of DNA shared with each suggests we are half-1st cousins once removed – that is, either their common grandfather or their common grandmother was the extramarital child of my paternal grandfather.
What marker level of yDNA test of a patrilineal descendant of their grandfather should be sufficient to exclude or confirm their grandfather as my paternal grandfather’s child? I have taken a FTDNA 67 marker yDNA test.
The amount of DNA shared with each suggests we are half-1st cousins once removed – that is, either their common grandfather or their common grandmother was the extramarital child of my paternal grandfather.
What marker level of yDNA test of a patrilineal descendant of their grandfather should be sufficient to exclude or confirm their grandfather as my paternal grandfather’s child? I have taken a FTDNA 67 marker yDNA test.
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