I have been looking for the original email from DnaPrint(Ancestrybydna2.5) regarding the percentage variations; Cannot locate it. However; It has to do with the number of chromosomes we inherit from our parents; Most siblings inherit different numbers of chromosomes so the percentages would be different. One sibling may inherit more african chromosomes and the other sibling inherit more european chromosomes etc. It just depends on how nature independently assorts the chromosomes to each of us. If I come across the original email from DnaPrint(Ancestrybydna2.5) I will post it.

HLee