Received answer from FT-DNA concerning upgrading the two tests in question. Looks like Bennett was too busy to completely read the original question. So, that's why there is an upgrade available. If you need an upgrade, please contact them again, but it won't do much good in this case unless both parties upgrade to the 25 marker test. Bob Jordan ----- Original Message ----- From: Bennett Sent: Tuesday, September 10, 2002 4:09 PM To: 'Robert Jordan' Subject: RE: One mismatch question Hi Bob ...If I discouraged one of these 2 guys from a refinement it was an error on my part. This is exactly the case for having a refinement performed...same surname and 1 point off. E-mail any time. Best Regards, Bennett Greenspan Family Tree DNA www.FamilyTreeDNA.com "History Unearthed Daily" -----Original Message----- From: Robert Jordan [mailto:[email protected]] Sent: Tuesday, September 10, 2002 6:35 AM To: Bennett Subject: Re: One mismatch question Thanks = kit xxxx for Billy Joe Jordan and kit xxxx for Gary Jordan - mismatch on 12th marker. Bob ----- Original Message ----- From: Bennett Sent: Monday, September 09, 2002 5:20 PM To: 'Robert Jordan' Subject: RE: One mismatch question Hi Bob I think I discouraged the person because the other person had not ordered the upgrade, or because he thought that he had a match with someone and didn't have an exact match. Please give me to kit #'s and let me k=look at these two guys. I'll answer you later this evening> E-mail any time. Best Regards, Bennett Greenspan Family Tree DNA www.FamilyTreeDNA.com "History Unearthed Daily" -----Original Message----- From: Robert Jordan [mailto:[email protected]] Sent: Monday, September 09, 2002 10:47 AM To: [email protected] Subject: One mismatch question I am coordinator of the Jordan family project at FT-DNA and have a problem you may be able to answer. There are two members who match on the 12 marker test except for one marker (off by one). It was my understanding that a sequence change could take place at any generation (mutation) and that these two individuals could be related. But to make sure, they must upgrade to the 25 markers. When one of them contacted you to find out about upgrading, you told him you would not do this unless you heard from him again. My question - should I discourage people in this situation to not upgrade, or the reverse. Of course, you have the experience with one number mismatches, so would you please give me some input. Thanks. Bob Jordan [email protected]