RE: [AZORES-Genealogy] Re: Family Finder Matches to the British Isles and Ireland

Are there any exceptions or special cases in how our DNA is inherited that would affect my predicted relationship and range?

Yes, there are exceptions to the way inheritance normally works. One example is a type of mutation called an inversion. In an inversion, a segment of DNA has detached and then re-attached in the reverse direction. The segment is therefore flipped so that it reads backwards compared to the rest of the DNA sequence

Inverted segments of DNA cannot recombine. A child will inherit that entire segment or none of it. When two distantly related people inherit the same long inverted segment, it makes them seem more closely related than they actually are.

The chance that two distant relatives will both inherit the inverted segment of DNA decreases with every generation. This makes it less likely that both distant relatives will inherit the block, but it is still possible.

Our test cannot detect if you have inverted segments of DNA, nor are inversions the only possible mutation that can have a similar effect on your predicted relationship. Inversions though are a reason for you to have a long (in centiMorgans) segment in common with a distant cousin

Melinda

From: [email protected]
To: [email protected]
Subject: RE: [AZORES-Genealogy] Re: Family Finder Matches to the British Isles and Ireland
Date: Fri, 8 Aug 2014 15:09:19 -0700

She shows as a 3rd cousin to my father and the exact same 13.1 cM longest block.

She shows as a 3rd cousin to my cousin with 33.31 shared cM and 18.90 longest block.

But I made a mistake earlier and confused her with another. She has no tree posted, but Hopkins is her maiden name, I think. There are some names that could have been Americanized - Henry could be Henrique. Cameron could be Camarao which I have, and Elliott could be another. Common matches for triangulation purposes are also in TN.

Maybe there's some truth to that Portuguese Melungeon theory, but that is more likely from black ancestors and a political designation.

Doug da Rocha Holmes
Pico & Terceira Genealogist

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-------- Original Message --------
Subject: Re: [AZORES-Genealogy] Re: Family Finder Matches to the British
Isles and Ireland
From: Kalani N <[email protected]>
Date: Fri, August 08, 2014 1:57 pm
To: [email protected]
Cc: [email protected]

I think 13.1cM as the longest block is pretty distant but it's doable with the total of 31cM. I had someone about that amount and traced a lot of her ancestors and wasn't able to find a connection. But from someone else who had ties to the same town as this person and my paternal grandmother, we shared 52cM, and I traced his ancestors too. Although predicted 3rd - 4th cousins, I found that we were 5th cousins but noticed in the process a surname that appears on my tree. So we're related two ways, but was unable to verify that 2nd connection.

So this may be the case for you. But you listed that Woman's name, seems german "von", not sure if that's her married name or not. Could be IBS thru Flemish (van). But it's hard.

The best way to figure these out is triangulation. Even that I'm still a novice a, but learning fast. :)

K

RE: [AZORES-Genealogy] Re: Family Finder Matches to the British Isles and Ireland

Are there any exceptions or special cases in how our DNA is inherited that would affect my predicted relationship and range?

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