a member of the DNA genealogy list pointed out that those 3 kit numbers aren't matching all at chromosome 13 from 98.8 to 100.5 - when I checked them I can indeed only find the following connections:
Comparing Kit A206624 (Kathleen Heath) and A720005 (*PS)
Comparing Kit A206624 (Kathleen Heath) and A731925 (Nancy McWard)
Comparing Kit A720005 (*PS) and A731925 (Nancy McWard)
I can't find a connection on chromosome 13. I've used 500 SNP and 1cM, I wouldn't advise using less than 500 SNP's as it further increases the likelihood that a second difference will be accepted as a match (500 SNP means that 1 in 500 SNP's is allowed to have a different value. If we go down to 250 SNP's for eg, we're allowing 1 in 250 or 2 in 500 differences).
The only thing I can find is:
Which is at 200 SNP's and 1cM. That would mean vs the previous 500 SNP's we do have indeed 2 or even 3 differences, too many to be acknowledged at the 500cM and 1cM level.
Sorry to say but the ancestral segment on chromosome 13 that is shown between you and the two ladies isn't showing at all between both of them.
That means there are two possible explanations:
1) Whatever was there as ancestral segments was lost. There are several big segments between one person and the other two people and none between the two people. That looks like they are lost through unfortunate recombination. But it can also be ...
2) that the paper trail is actually correct on paper but there has been a NPE (non paternal event) and as such there is no triangulation possible for that common ancestor. Unless you're saying that all lines are just the female lines only (mother-to-mother). As soon as one line goes through a father it might be one of the question marks.
If it's the second case then by testing more people that are on the same line of the family tree will bring ultimately clarity which of the two is the correct one.
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