Author Topic: Do shared matches NOT all share the same DNA segments?  (Read 6405 times)

Offline Gadget

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #18 on: Saturday 30 March 19 15:03 GMT (UK) »
I was just coming on to ask about finding all who share a particular segment (or overlap) and see that you've already discovered one. I'm not sure about the $10 though!  I might suggest it to the match who contacted me about herself and 2 2nd cousins, all sharing same segment!

Thanks for link.

Gadget

Added - I can't find a link in paper trails and she has a VERY large tree!  We're talking circa 34cMs
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Offline melba_schmelba

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #19 on: Saturday 30 March 19 17:48 GMT (UK) »
I was just coming on to ask about finding all who share a particular segment (or overlap) and see that you've already discovered one. I'm not sure about the $10 though!  I might suggest it to the match who contacted me about herself and 2 2nd cousins, all sharing same segment!

Thanks for link.

Gadget

Added - I can't find a link in paper trails and she has a VERY large tree!  We're talking circa 34cMs
Hi Gadget, I haven't yet tried it, but I think the charge is probably fair - Andy Lee of Family History Fanatics did a summing up of the differences between the old GEDMATCH and GEDMATCH Genesis 

https://www.youtube.com/watch?v=BILMRJH1Qzo

He states that all the tools in the paid for Tier 1 bracket are very server intensive, and they simply cannot afford to offer them for free. When you realise a segment search analyses all the segments of 3000 matches and lists everything in common, you can see that would take a lot of number crunching so consequentially greater electricity costs and server load on their side :). I wonder if this is why Ancestry can't do similar with our matches - on the other hand we do pay them far more for the privilege and they are no doubt rolling in dosh which they could expend on a few more servers ::).

Offline Gadget

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #20 on: Saturday 30 March 19 19:37 GMT (UK) »
OK - you've convinced me. I'll go get my card before the £ sinks yet again against the $  :-X

Gadget
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Offline melba_schmelba

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #21 on: Sunday 31 March 19 11:59 BST (UK) »
OK - you've convinced me. I'll go get my card before the £ sinks yet again against the $  :-X

Gadget
Oh, tell us how you get on, I'll probably do it myself later  :). Don't forget to use Mercedes Brons' blog if you need any help

http://whoareyoumadeof.com/search-results/?q=gedmatch


Offline Gadget

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #22 on: Wednesday 03 April 19 21:38 BST (UK) »
I've heard from my match who did a Tier 1 segment match and I'm not on that list, although I am on the My Heritage one (and triangulate). In fact she and her other relatives who match with me (and triangulate)  on My Heritage have much lower shared cMs on Gedmatch.

Very odd.  ???

Gadget
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Offline melba_schmelba

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #23 on: Thursday 04 April 19 19:38 BST (UK) »
I've heard from my match who did a Tier 1 segment match and I'm not on that list, although I am on the My Heritage one (and triangulate). In fact she and her other relatives who match with me (and triangulate)  on My Heritage have much lower shared cMs on Gedmatch.

Very odd.  ???

Gadget
Strange, are you definitely checking the right chromosome  :D. I took the plunge myself and have confirmed some shared matches on Ancestry do share the same segments, but unfortunately only a tiny % of Ancestry users are on there. Also a tiny % of GEDMATCH users have GEDCOM trees so it's hard to get a bearing on who or where most people are.
  One thing I do think is the case, is the GEDMATCH segment match hasn't yet been updated with the new Q-Match matching algorithm - the one to many tools both are and kits that match one or two tools are, but the segment search still seems to use the old matching method, which is confusing. The One to One Q-Matching is a currently a premium feature - the free One to One uses the old match system which doesn't match the other free tools, which is again, confusing! Haven't yet tried the triangulate tools, and haven't got enough close family members tested to try the phasing yet.

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #24 on: Thursday 04 April 19 20:05 BST (UK) »
Quote
Strange, are you definitely checking the right chromosome

So she said - it's on C12. Off hand, I can't remember the segment  but My Heritage has them matching on quite a few of my matches and triangulating  :-\

I'm wondering if she did it correctly.

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Offline melba_schmelba

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #25 on: Friday 05 April 19 18:59 BST (UK) »
Quote
Strange, are you definitely checking the right chromosome

So she said - it's on C12. Off hand, I can't remember the segment  but My Heritage has them matching on quite a few of my matches and triangulating  :-\

I'm wondering if she did it correctly.
Did you check yourself? If you haven't got a Tier 1, if you pm the details I'll check for you.

Offline Gadget

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Re: Do shared matches NOT all share the same DNA segments?
« Reply #26 on: Friday 05 April 19 20:17 BST (UK) »
I'm still playing with it but I've found that one of her 2nd cousins comes up but neither she or the other 2nd cousin comes up.  There are only 4 others on the same segment group.



 
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