madlori:

genealogy-watercooler:

popchartlab:

Who the Hell Is This Person Talking to Me and How Exactly Are They Related to Me: The Chart, just in time for your Thanksgiving gathering.

(Source: Apparently commenter “Platypus Man” from this Lifehacker post)

Oooh!  I really like that this chart gives (average) percentage of genetic similarity.

And confession: Despite my genealogy hobby, I can never remember what my cousins’ children are called in relation to me.  (First cousin once removed, apparently.) 

Protip: the 1st, 2nd, 3rd etc when referring to cousins refers to how many generations back you have to go to find a common grandparent. First cousins share a grandparent, second cousins share a great-grandparent, etc.

If you do NOT share a grandparent with the relative (for example, your grandparent is their great-grandparent) then there’s a remove involved.