> On 11/22/2013 5:30 PM, Malcolm McClure wrote: > However, I am bothered about the influence of reverse mutations on > ancestral projections and comparisons. We need widespread sampling of > several related generations to establish the importance of this > possible effect, but those data are unlikely to become available for > many years, if not generations. In the Doherty Surname group we have two fairly well documented groups of fathers, brothers, cousins and uncles who have up to a 5 pr 6 GD mismatch among them. There are not only mutations between an uncle and nephews, but also between the two groups. Yet the two groups have been able to verify that they are indeed cousins. Barbara Andrews, who leads the research for one group had Susan Hedeen analyze the matches and her analysis initially indicated that the other line (Carleen Doherty's) and her line aren't as closely tied as some of the other matches. Maybe this should be revisited. Since it seems more cousins are being added to this group (i.e. Doherty participant kit 301205 has just joined the the Doherty Surname group). Bob Doherty Sent from my iPad