Hi all, I've already posted this on DNA Forums and the L21 list but I thought it would be worth mentioning here. It appears DF23 is now available for ordering from the Order Advanced Tests menu. To be clear for anyone not following the discussion up to this point, DF23 is known to be upstream of M222, so if you have already tested positive for M222 there is no point in ordering a DF23 test. However if you are a close match to the North-West Irish signature but have tested negative for M222, you may well wish to test for DF23 as it will provide further evidence for your close relationship with the M222+ clade and may help clarify the origins and early history of M222. For instructions on how to order DF23, follow the instructions in this post (substituting DF23 for Z253): http://tech.groups.yahoo.com/group/RL21Project/message/5129. Best, Steve

Steve, Many thanks for posting this. I take it there isn't an formal research/testing group for DF23 yet? I would be interested to see what surnames are coming up in the DF23+ M222- group. Iain ---------------------------------------- > Date: Tue, 25 Oct 2011 11:13:46 -0400 > From: stephen.forrest@gmail.com > To: dna-r1b1c7@rootsweb.com > Subject: [R-M222] DF23 test now available at FTDNA > > Hi all, > > I've already posted this on DNA Forums and the L21 list but I thought it > would be worth mentioning here. It appears DF23 is now available for > ordering from the Order Advanced Tests menu. > > To be clear for anyone not following the discussion up to this point, DF23 > is known to be upstream of M222, so if you have already tested positive for > M222 there is no point in ordering a DF23 test. > > However if you are a close match to the North-West Irish signature but have > tested negative for M222, you may well wish to test for DF23 as it will > provide further evidence for your close relationship with the M222+ clade > and may help clarify the origins and early history of M222. > > For instructions on how to order DF23, follow the instructions in this post > (substituting DF23 for Z253): > http://tech.groups.yahoo.com/group/RL21Project/message/5129. > > Best, > > Steve > R1b1c7 Research and Links: > > http://clanmaclochlainn.com/R1b1c7/ > ------------------------------- > To unsubscribe from the list, please send an email to DNA-R1B1C7-request@rootsweb.com with the word 'unsubscribe' without the quotes in the subject and the body of the message

Hi Iain, The DF23 test just became available (yesterday or today), so no test results are yet available. The DF23 SNP was discovered in early 2011 but there were apparently some technical issues with primers which prevented the test from being available for quite a while. It has been confirmed that DF23 is upstream of M222 and I seem to recall from the discussion on DNA Forums that DF23+ M222- samples were known, but they are all anonymous. I'm sure we won't have to wait too long for results and hopefully they'll show us something interesting. Steve

As a follow-up to my last post, I just noticed that some STR results for an anonymous DF23+ M222- individual (from Utah) have been released. See this thread: http://www.worldfamilies.net/forum/index.php?topic=10088.0 I should say that because DF23 is upstream of M222, we would expect that the DF23+ population could have at least as much variation as the M222+ population show. So if you are M222- but not a close match to this particular STR profile, don't necessarily take it as evidence you won't turn up positive for DF23. best, Steve