> <*snip*> > > One male that I linked logically proved to be a different > > haplogroup which was very disheartening. In fact no other > > tested Sullivan so far matches my haplogroup which is very > > alarming as far as extending my genealogy. > <*snip*> > > [email protected] (J. Hugh Sullivan) > > You've referred to haplogroup results in both your OP and the quote > above. I wonder if you understand that the hapolgroup 'result' that > FTDNA provides as a result of the 37-marker Y-chromosome test is NOT > a result of testing for your haplogroup. That 'result' is merely a > prediction of a likely haplogroup based upon your STR Marker > results. To determine your Haplogroup from a real DNA test, you must > order an SNP Biallelic Marker test. ( SNP = Single Nucleotide > Polymorphisms.) The haplogroup prediction they gave me from my STR > 37-Marker results was NOT the same as the results from my SNP test. > If you are seriously interested in your hapolgroup, you need to > order the SNP test. > > Mardon <[email protected]> I was aware of that BUT I was unaware that the prediction might be incorrect. Thank you for the information. I am just barely smart enough to know that I know very little about DNA. You might comment on this please... I am the only Sullivan (tested so far) who was predicted to be in the R1a1 haplogroup - the rest are in R1b or R1b1. I understand that both are (may I say subsets) of R. How likely is it that I would differ that much unless there was basis? An educated opinion is sufficient. Regardless of the haplogroup am I not looking for a 35/37 marker match, or better, to have any genealogical meaning for me since my provable data only extends to 1790? I have genealogies and logic extending further back but no provable link. I note that there are tests beyond the 37 markers but the last I read they are not too important at this point - certainly not if no Sullivans test more than 37 and so few Sullivans test. Thank you again for the valuable contribution to the thread. Hugh [email protected] (J. Hugh Sullivan)