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Spider Jerusalem

(21,786 posts)
24. ISOGG (the International Society of Genetic Genealogy) has some useful references as well:
Wed Sep 4, 2019, 06:01 PM
Sep 2019
https://isogg.org/wiki/Autosomal_DNA_statistics

A lot of my and my mother's DNA matches are significantly affected by endogamy--a lot of my ancestors were Maryland Catholic colonists who intermarried within the same community for 200-300 years; I have almost no pedigree collapse, but I still have DNA matches who share as many as 2 dozen common ancestors between 1650 and 1750 (my most distant DNA matches on GEDmatch etc where I can verify common ancestors are 7C2R/8C1R, with shared DNA in the range of 18-20cM). The effect of endogamy is pretty evident in looking at my DNA matches on Ancestry as well, where there are a huge number of matches with distinctive colonial Maryland surnames like Mudd, Craycroft, and Edelen (all of those are in my direct line, none more recently than the early 1700's).

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Trying to explain bloodlines [View all] Marthe48 Aug 2019 OP
I stopped working on genealogy after DURHAM D Aug 2019 #1
I have a couple interests Marthe48 Aug 2019 #9
Do you subscribe to ancestory? nt DURHAM D Aug 2019 #14
I've just used library resources Marthe48 Sep 2019 #17
I'm with your nephew......I really don'care. virgogal Aug 2019 #2
My kids are decendent of George Clinton, Jefferson's Vice President. 3Hotdogs Aug 2019 #3
Your nephew doesn't share any bloodlines with your husband unless I am missing seaglass Aug 2019 #4
I thought Marthe48 Aug 2019 #10
Well, think of it as DNA rather than blood as it pretty much means the same thing. seaglass Aug 2019 #13
I understand Marthe48 Sep 2019 #18
I feel that my distant relatives are no more a part of wasupaloopa Aug 2019 #5
I am not interested enough to have my dna tested Marthe48 Aug 2019 #11
My brother got his dna tested. He was told he came wasupaloopa Aug 2019 #16
The ads highlight results like that Marthe48 Sep 2019 #19
The only ancestry I'd be interested in is what previous lives my soul has occupied and if I Karadeniz Aug 2019 #6
You remain 'related' generations back but... WePurrsevere Aug 2019 #7
Thanks for the chart and explanation Marthe48 Aug 2019 #12
Taking biology definitely helps... WePurrsevere Aug 2019 #15
Don't feel too bad Marthe48 Sep 2019 #20
That chart is only about averages, though Spider Jerusalem Sep 2019 #21
Yes, that's correct and there's always the possibility... WePurrsevere Sep 2019 #23
ISOGG (the International Society of Genetic Genealogy) has some useful references as well: Spider Jerusalem Sep 2019 #24
WOW good information Marthe48 Aug 2019 #8
If you're an American with colonial ancestry... Spider Jerusalem Sep 2019 #22
That's incredible! Marthe48 Sep 2019 #25
A lot of research Spider Jerusalem Sep 2019 #34
geneaology is no fun at all when your mother is a holocaust survivor unblock Sep 2019 #26
You have my sympathy Marthe48 Sep 2019 #29
my mother and her parents were evicted unblock Sep 2019 #32
Harrowing story Marthe48 Sep 2019 #33
I'm 1/2 Armenian and there is nothing after my great grandparents LeftInTX Sep 2019 #35
I do not study this stuff Doreen Sep 2019 #27
Our genes mix every time a baby is made Marthe48 Sep 2019 #30
What I think matt819 Sep 2019 #28
I think you can develop character Marthe48 Sep 2019 #31
The things is... franzwohlgemuth Dec 2020 #36
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