As an administrator I 'll not ban this thread although clearly outside the scope of the list. We have very few such wrong directed post and I believe some members can help on this question.   My take is tha L1b is "rare" only among european people. I don't know if you are aware that this means you have a clear african ancestry in your maternal lineage. The are plenty L1b people in central Africa. The interesting point is to date the origin of this african lineage in your family.   Didier Vernade   (I realize that you may have mix the I with a "L" - this list is for "i" haplogroup for Y chrmosome - not L for mitochondrial DNA - but as I said : no problem !) > > Can someone give me insight to the Revised Reference Cambridge Sequence? I manually posted my DNA results to Ancestry.com and my results indicate I'm an exact match. It appears less than 5% of people tested belong to this group. In layman's terms, what does this mean and how can it assist me genealogy research? My Haplo group is L1b. > > Thanks, > > Mike >