Back on the horse after a long day. Adding even more detail that I received earlier. Color coding to make this more readable.
Jersey Girl wrote:Adding more detail to the OP:
A person got her DNA results back. (No, it's not me).
Her aunt and uncle are listed as:
Aunt (Second cousin) 609 cM shared
Uncle (Close relative) 1,640 cM shared
Aunt and Uncle are siblings.
What explains this?
When the details portion of the results are opened up, here is what it shows:
Aunt (Second cousin)
609 cM shared Shared across 26 DNA segments
Confidence: Extremely High
Possible range: first - second cousinsUncle (Close relative)
1,640 cM sharedShared across 62 DNA segments
Confidence: Extremely High
Possible range: close relative- first cousin
Which seems to muddy the waters just a bit in that, both the aunt and uncle could fit as first cousin though the uncle leans heavy towards close relative where the aunt seems to lean heavy in the direction of second cousin which makes little to no sense to me unless it represents
distance in terms of how much DNA is shared between them.
Making it more likely that there is one shared parent between them and one that is not shared.
Then...there is this information supplied. I extracted only the ranges/relationships applicable to this case.
1450-2050 aunt/uncle
680-1150 first cousin
200-620 second cousinIt says absolutely nothing about half aunt or half uncle relationships so the results are not stated with much differentiation regarding relationships in the same way that the charts are that I posted previously.
This still leaves open the question about the relationship between the aunt/uncle. Do they share both parents in common? Do they share only a mother? Share only a father?
And how does one discover this without doing either or both the Y and X chromosome testing?
Have not received a written response from Ancestry. Didn't get through on the phone call but only because I wasn't wiling to wait in the queue for 15 minutes at the time.
These tests, although they can be fun and interesting, can also be quite disruptive which is why I posted the inquiry here as I was trying to get multiple responses from a variety of sources for these folks.
I'll continue to compare responses until I can come up with a comment or two for those involved.