Hi Joan, Sorry it has taken me a couple of days to answer your email to the list about the DNA study. First, let me ask what company your husband had his DNA done through. There are wto main companies that are doing this type of work in the US - Family Tree DNA and Relative Genetics. We are doing our Fitzpatrick study through RG. The companies have about half of the DNA markers they test in common. So if you are tested by RG on all 26 markers they offer, you would be compatible with our study. If your husband was tested through FTDNA on either 12 or 25 markers (whichever option he chose), then on the first twelve he would be compatible with us, but this does not say too much. The first twleve I think are probably the ones that change very slowly, so that there are quite a few people of all lines who would match on these. The last 13 are mostly different form the ones that RG uses. These last 13 are the ones that vary more, I believe, and there is a much higher chance of a mismatch. I can be corrected on this, but understand that FTDNA wants people to match on those first 12 so they will continue for the rest of the remiaing 13. Also, to be compatible with our study, your husband would have to be a male Fitzpatrick. The tests that either company does are on the Y-chromasome, the one carried only by the males in the family. If his last name is Rusk, then he probably wouldn't be part of our study. The good news is that there might be a Rusk study in the works. I don't know. But if you search on google for Chris Pomery's web site, he has a list of all the single name studies going on right now. It has contact info for most of them, too. If I can answer any more questions on DNA, give me an e-holler. Colleen