Using AncestryDNA to verify biological father?


I believe I have finally found my biological father. I was recently contacted by a possible cousin.

Amount of Shared DNA in Ancestry is 548 centimorgans shared across 31 DNA segments.

In GEDMATCH the Largest segment = 75.3 cM Total of segments > 7 cM = 625.0 cM 25 matching segments

Estimated number of generations to MRCA = 2.3

Is this a good chance that I have found my long lost family?

Tanya Henman

Posted 2017-10-29T18:32:48.007

Reputation: 11

Question was closed 2017-10-30T08:44:56.833

Tanya, if you look at, you'll find a good tool for assessing the closeness of the match.

– ColeValleyGirl – 2017-10-29T19:58:02.653



Questions like yours are now easily answered using a tool linked to at How can I determine the likely relationship based upon autosomal DNA shared cM?

That DNA Painter tool shows that for 625 cM a first cousin relationship is possible, and at 548 cM you are close too.

Click the preceding links to see nice pictures illustrating your possible relationships.


Posted 2017-10-29T18:32:48.007

Reputation: 10 741