I am fortunate to have a number of relatives with whom to compare this cousin. The expected percentage of DNA in common with a known second cousin is 3.125%. He and my mother share 3.27%, while he shares about 3.1% with her sister and 2.77% with their first cousin V. It is interesting to see in the chart below that each of them inherited mostly unique segments with only a few segments in common. The chart compares my mother in dark blue, my maternal aunt in light green and their first cousin V in light blue to their second cousin (KnownC). All three women have the same familial relationship to him, but due to the random inheritance of autosomal DNA, they each share unique patterns and amounts of DNA with him. Notably, all four only share at one small spot on Chromosome 11.
|Click on the chart to enlarge and get a closer look|
|Note: On Chromosome #8 there is an unaccounted for small match. This match does not show in any other family member and may be a psuedo-segment|
|Note: On Chromosome #22 there is an unaccounted for match, This may be from inherited from the paternal side.|