Peter Bricker of Cocalico, PA Family Tree

Participants BR06, BR07, BR11, and BR19 represent the descendents of three out of the five sons of Peter Bricker of Cocalico, Lancaster County, PA. The genetic signature or haplotype of BR11, a descendent of son Peter Bricker Jr, differs from that of BR06, BR07, and BR19, descendents of sons Christian and John Bricker, at two markers along their respective Y-chromosomes: DYS 439 and DYS 392. A total mutational distance between BR11 on the one hand and BR06, BR07, and BR19 on the other hand is three, which in most cases would tend to rule out a genetic relationship, as two mutations in a 12-marker comparison is considered the limit for such a possibility.

However, all four participants appear to share a rare "micro-allele", a half-step mutation of "13.2" at marker DYS 385b. In addition, both participants BR07 and BR11 upgraded to the 25-marker Y-DNA test, and found that they had identical allele values at the additional thirteen markers tested, see here. With the genealogical evidence pointing to all four Project participants as descending from Peter Bricker Sr of Cocalico, the genetic results confirm Peter as their most recent common ancestor.

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