I can't say anything specific, other than that there's a HUGE possible range for TMRCA. This article by Ken Nordtvedt is very relevant, but people have tended to ignore it. I feel it presents a mathematical basis for the "purely logical" process many people use of looking at off-modal markers to identify a lineage. http://www.jogg.info/42/files/Nordtvedt.htm Richard Thrift ---- Ralph Taylor <rt-sails@comcast.net> wrote: Regarding the Western Atlantic Modal Haplotype (or, more precisely, the "Super Western Atlantic Modal Haplotype"), what would be the presumption of a common male ancestor within the genealogical time frame for men sharing this haplotype? What, if any, would be the presumption for men who differed from this haplotype in only one marker? Any opinions? According to FTDNA's FAQ, "The WAMH is a group of the most common results found in the most common European haplogroup, R1b." Somewhere, I remember reading that the original WAMH was only 6 markers, but was extended to 12 and the "Super WAMH" extended it further. Thanks in advance. -rt_/) ------------------------------- To unsubscribe from the list, please send an email to Y-DNA-PROJECTS-request@rootsweb.com with the word 'unsubscribe' without the quotes in the subject and the body of the message