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RLP 228: The Effect of Pedigree Collapse on DNA Matching: A Case Study

The Research Like a Pro Genealogy Podcast

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How to Calculate the Coefficient of Relationship in Genetic Genealogy

Each ancestor, each person or individual in the tree is considered a separate relationship path rather than thinking of ancestral couples being grouped together. The way that I did this was using lucid chart to kind of map each of the five paths out and then on the connecting lines connecting each box I added a small blue number to count how many steps there were. So for the Hopper example we need to list each common ancestor including those who are in Joseph's pedigree twice to put pedigree collapse. Then we'll count the number of generations separating them all.

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