After that astounding news about the DNA test of 42410 David Alan James last week and the fact that he does not match the David James of Chester Co, PA group we have had the question come up about his one marker mutation with 43728 John Stewart James when it looks like they have two markers that are different. It's those fast moving markers that they only count as one mutation. The answer to the question is on this page. http://www.familytreedna.com/ftGroupQIGuide.html#score It is question 7. 7. How do I score DYS 389 1 & 2. It seems that these 2 markers are 13, 29 and 14, 30 but your Genetic Distance Report only shows these two people as being 1 point away. There are a lot of questions answered by FTDNA on this webpage. Gwen Boyer Bjorkman gwenbj@seanet.com