I will submit my cousin's DNA for a 37 marker test. How do I do it. Larry -----Original Message----- From: Couch, Robert H. [mailto:[email protected]] Sent: Wednesday, April 20, 1904 8:11 AM To: [email protected] Subject: Re: [COUCH] DNA Testing John, A 12 marker DNA test result is compared with others who have taken the test. If you have a perfect match with someone else having taken the 12 marker test then there is a 99.9% chance that you two have a common ancestor withing the past 62 generations and a 50% chance of having a common ancestor within the past 14 generations. A 25 marker DNA test narrows it down even more. A perfect 25 marker DNA test match indicates that you have a common ancstor with others in that group you match with in the past 32 generations (95% probability) and a 50% chance that you an the ones you match have a common ancestor within the past 7 generations. Every so many years there can occur a mutation indicated with a differet test score on one of the markers of your test results. If that should happen then others with who you share the mutation may be even closer to you in terms of genrerations. It is my understanding that the 37 marker further narrows down the generations in which you can find a common ancestor. To date only Bill Couch and perhaps one or two others have opted for the 37 marker test. Should all group 5 individuals take the 37 marker test then we should be able to narrow down the common ancestor even more closely. Since Bill has a Mutation on his 25 marker test then if you have that same mutation on the 25 or 37 marker test then you could see just how closely related you were to Bill Couch. I suspect we all will eventually take the 37 marker test. Until more individuals agree to shell out another $100 buck or so the 37 marker test will have limited value for comparision. Hope this helps. Robert H. Couch ---------- >From: "John Couch" <[email protected]> >To: [email protected] >Subject: [COUCH] DNA Testing >Date: Mon, Apr 19, 2004, 9:31 AM > >Hi Everyone, > >Was just filling out the order form for the DNA testing. How much of a >difference is there between the tests? I'll take the 37 marker one is it >is worth it. I know next to nothing about how the tests work, so any >general information on that would be helpful too. Also, it's the male xx >paternal marker tests correct? > > >============================== >Gain access to over two billion names including the new Immigration >Collection with an Ancestry.com free trial. Click to learn more. >http://www.ancestry.com/rd/redir.asp?targetid=4930&sourceid=1237 > ============================== Gain access to over two billion names including the new Immigration Collection with an Ancestry.com free trial. Click to learn more. http://www.ancestry.com/rd/redir.asp?targetid=4930&sourceid=1237