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Old 30th November 2016, 09:01 PM
loobster loobster is offline
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Join Date: Feb 2012
Posts: 627
AH - followed up on your suggestion to look on the "Haplotree & SNPs" Page. Since did not have any SNPs, hadn't been looking there. Thank you.

That is where they give some of the info I was asking for here, such as why bother doing it, etc.

It says: "Testing Y-DNA SNP markers places you further down the branch on the Y-DNA haplotree and assists us with scientific research on the Y-tree and for your haplogroup projects. The more people that test their SNPs, the more data points we have to further our understanding of human migration and history. More importantly to you is that SNPs may help in your genealogy and deep ancestry research."

So - if I succeed in talking him into agreeing to the SNP Pack, does it actually help further understanding and etc. as it says?

Is it actually likely to give me info on "ancestry that goes beyond where traditional paper trails end"?
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Old 3rd December 2016, 01:07 PM
clintonslayton76 clintonslayton76 is offline
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Join Date: Jun 2014
Posts: 243
As Jim Barrett has written...

The SNP packs are not to help you with a relationship, they are to further the study of your haplotype to refine to a terminal SNP, placing you in a haplogroup or even a subclade (a more exclusive club).
A 67-111 marker STR test is still the heart and soul of surname/family testing, because SNP testing has no concern with your family as such.

My highest Big Y "matches" are not related to me in any meaningful way, except to those trying to put a date on a mutation.

Last edited by clintonslayton76; 3rd December 2016 at 01:08 PM. Reason: emphasis
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Old 4th December 2016, 05:57 AM
Jim Barrett Jim Barrett is offline
Join Date: Apr 2003
Location: Timpson, TX
Posts: 2,278
My cousin's best Big-Y match, 23 shared novel SNPs, 0 known SNP differences and 26,982 matching SNPs is also one of his best STR matches. At this time we don't know how they are related. Both are Haplogroup BY12150.
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Old 4th December 2016, 12:23 PM
clintonslayton76 clintonslayton76 is offline
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Join Date: Jun 2014
Posts: 243
My YFull "cousin"

My highest SNP match shows in a haplogroup by YFull as I-A1890. His STR test puts him in my haplotype, but by STR interpretation, he is not related to me at all in a meaningful way. Mutation is aged at about 2900 years BPY.
FTDNA used to have both of us as I-Y3153.
FTDNA has now subcladed me as I-F1997. This is, in my opinion, a novel SNP and this should not be used as a subclade, but now my SNP "match" is differentiated on FTDNA.
That at least shows us a "less related" than YFull, but since YFull explains everything they do, and gives age estimates, while FTDNA explains nothing about their changes, gives no age estimates, and does not even announce such changes, I have two different services giving me different haplogroups.
This is what I was pointing out to Loobster, that this is way outside any connection to immediate family or surname.

Last edited by clintonslayton76; 4th December 2016 at 12:24 PM. Reason: correction
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Old 12th February 2018, 02:05 PM
clintonslayton76 clintonslayton76 is offline
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Join Date: Jun 2014
Posts: 243
Since the hg38 conversion...

Forum member Contemplator helped me determine that the F1997 SNP declared as my terminal on FTDNA is graded as "private" by other test interpreters with smaller databases for comparison, and they stop at A1890,A1892 as terminal.

Now FTDNA shows no Big Y matches of any kind, but did so when I was terminaled as Y3153.
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