Monthly Archives: February 2023

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DNA Musings no. 24: Cousins: First, Second, Removed, and Half

By Betty Hagberg. When using DNA in genealogy, it is particularly important to understand the exact genetic relationship you have with your relatives. Cousins ‘First cousins’ share a set of grandparents.  The children of ‘first cousins’ share a set of great grandparents and are ‘second cousins’. First cousins share grandparents. […]